MM-36271: Bump major version to 6.0 (#17973)

https://mattermost.atlassian.net/browse/MM-36271

```release-note
We bump the major version to 6.0
```

einterfaces/account_migration.go

@@ -4,7 +4,7 @@
 package einterfaces
 
 import (
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type AccountMigrationInterface interface {

einterfaces/cloud.go

@@ -4,7 +4,7 @@
 package einterfaces
 
 import (
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type CloudInterface interface {

einterfaces/cluster.go

@@ -4,7 +4,7 @@
 package einterfaces
 
 import (
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type ClusterMessageHandler func(msg *model.ClusterMessage)

einterfaces/compliance.go

@@ -4,7 +4,7 @@
 package einterfaces
 
 import (
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type ComplianceInterface interface {

einterfaces/data_retention.go

@@ -4,7 +4,7 @@
 package einterfaces
 
 import (
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type DataRetentionInterface interface {

einterfaces/jobs/cloud_interface.go

@@ -4,7 +4,7 @@
 package jobs
 
 import (
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type CloudJobInterface interface {

einterfaces/jobs/data_retention.go

@@ -4,7 +4,7 @@
 package jobs
 
 import (
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type DataRetentionJobInterface interface {

einterfaces/jobs/elasticsearch.go

@@ -4,7 +4,7 @@
 package jobs
 
 import (
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type ElasticsearchIndexerInterface interface {

einterfaces/jobs/ldap_sync.go

@@ -4,7 +4,7 @@
 package jobs
 
 import (
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type LdapSyncInterface interface {

einterfaces/jobs/message_export.go

@@ -4,7 +4,7 @@
 package jobs
 
 import (
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type MessageExportJobInterface interface {

einterfaces/jobs/resend_invitation_email.go

@@ -2,7 +2,7 @@
 // See LICENSE.txt for license information.
 package jobs
 
-import "github.com/mattermost/mattermost-server/v5/model"
+import "github.com/mattermost/mattermost-server/v6/model"
 
 // ResendInvitationEmailJobInterface defines the interface for the job to resend invitation emails
 type ResendInvitationEmailJobInterface interface {

einterfaces/ldap.go

@@ -4,8 +4,8 @@
 package einterfaces
 
 import (
-	"github.com/mattermost/mattermost-server/v5/app/request"
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/app/request"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type LdapInterface interface {

einterfaces/license.go

@@ -3,7 +3,7 @@
 
 package einterfaces
 
-import "github.com/mattermost/mattermost-server/v5/model"
+import "github.com/mattermost/mattermost-server/v6/model"
 
 type LicenseInterface interface {
 	CanStartTrial() (bool, error)

einterfaces/message_export.go

@@ -6,7 +6,7 @@ package einterfaces
 import (
 	"context"
 
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type MessageExportInterface interface {

einterfaces/metrics.go

@@ -5,7 +5,7 @@ package einterfaces
 
 import (
 	"github.com/mattermost/logr"
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type MetricsInterface interface {

einterfaces/mfa.go

@@ -4,7 +4,7 @@
 package einterfaces
 
 import (
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type MfaInterface interface {

einterfaces/mocks/AccountMigrationInterface.go

@@ -5,7 +5,7 @@
 package mocks
 
 import (
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/AppContextInterface.go

@@ -5,7 +5,7 @@
 package mocks
 
 import (
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/CloudInterface.go

@@ -5,7 +5,7 @@
 package mocks
 
 import (
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/CloudJobInterface.go

@@ -5,7 +5,7 @@
 package mocks
 
 import (
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/ClusterInterface.go

@@ -5,10 +5,10 @@
 package mocks
 
 import (
-	einterfaces "github.com/mattermost/mattermost-server/v5/einterfaces"
+	einterfaces "github.com/mattermost/mattermost-server/v6/einterfaces"
 	mock "github.com/stretchr/testify/mock"
 
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 )
 
 // ClusterInterface is an autogenerated mock type for the ClusterInterface type

einterfaces/mocks/ComplianceInterface.go

@@ -5,7 +5,7 @@
 package mocks
 
 import (
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/DataRetentionInterface.go

@@ -5,7 +5,7 @@
 package mocks
 
 import (
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/DataRetentionJobInterface.go

@@ -5,7 +5,7 @@
 package mocks
 
 import (
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/ElasticsearchAggregatorInterface.go

@@ -5,7 +5,7 @@
 package mocks
 
 import (
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/ElasticsearchIndexerInterface.go

@@ -5,7 +5,7 @@
 package mocks
 
 import (
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/LdapInterface.go

@@ -5,8 +5,8 @@
 package mocks
 
 import (
-	request "github.com/mattermost/mattermost-server/v5/app/request"
-	model "github.com/mattermost/mattermost-server/v5/model"
+	request "github.com/mattermost/mattermost-server/v6/app/request"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/LdapSyncInterface.go

@@ -5,7 +5,7 @@
 package mocks
 
 import (
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/LicenseInterface.go

@@ -5,7 +5,7 @@
 package mocks
 
 import (
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/MessageExportInterface.go

@@ -9,7 +9,7 @@ import (
 
 	mock "github.com/stretchr/testify/mock"
 
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 )
 
 // MessageExportInterface is an autogenerated mock type for the MessageExportInterface type

einterfaces/mocks/MessageExportJobInterface.go

@@ -5,7 +5,7 @@
 package mocks
 
 import (
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/MetricsInterface.go

@@ -8,7 +8,7 @@ import (
 	logr "github.com/mattermost/logr"
 	mock "github.com/stretchr/testify/mock"
 
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 )
 
 // MetricsInterface is an autogenerated mock type for the MetricsInterface type

einterfaces/mocks/MfaInterface.go

@@ -5,7 +5,7 @@
 package mocks
 
 import (
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/NotificationInterface.go

@@ -5,7 +5,7 @@
 package mocks
 
 import (
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/OAuthProvider.go

@@ -7,7 +7,7 @@ package mocks
 import (
 	io "io"
 
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/ResendInvitationEmailJobInterface.go

@@ -5,7 +5,7 @@
 package mocks
 
 import (
-	model "github.com/mattermost/mattermost-server/v5/model"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/mocks/SamlInterface.go

@@ -5,8 +5,8 @@
 package mocks
 
 import (
-	request "github.com/mattermost/mattermost-server/v5/app/request"
-	model "github.com/mattermost/mattermost-server/v5/model"
+	request "github.com/mattermost/mattermost-server/v6/app/request"
+	model "github.com/mattermost/mattermost-server/v6/model"
 	mock "github.com/stretchr/testify/mock"
 )
 

einterfaces/notification.go

@@ -4,7 +4,7 @@
 package einterfaces
 
 import (
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type NotificationInterface interface {

einterfaces/oauthproviders.go

@@ -6,7 +6,7 @@ package einterfaces
 import (
 	"io"
 
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type OAuthProvider interface {

einterfaces/saml.go

@@ -4,8 +4,8 @@
 package einterfaces
 
 import (
-	"github.com/mattermost/mattermost-server/v5/app/request"
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/app/request"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type SamlInterface interface {