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
```

utils/api.go

@@ -14,8 +14,8 @@ import (
 	"path"
 	"strings"
 
-	"github.com/mattermost/mattermost-server/v5/model"
-	"github.com/mattermost/mattermost-server/v5/shared/i18n"
+	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/shared/i18n"
 )
 
 func CheckOrigin(r *http.Request, allowedOrigins string) bool {

utils/api_test.go

@@ -19,7 +19,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 func TestRenderWebError(t *testing.T) {

utils/archive_test.go

@@ -13,7 +13,7 @@ import (
 
 	"github.com/stretchr/testify/require"
 
-	"github.com/mattermost/mattermost-server/v5/utils/fileutils"
+	"github.com/mattermost/mattermost-server/v6/utils/fileutils"
 )
 
 func TestSanitizePath(t *testing.T) {

utils/authorization.go

@@ -4,7 +4,7 @@
 package utils
 
 import (
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 func SetRolePermissionsFromConfig(roles map[string]*model.Role, cfg *model.Config, isLicensed bool) map[string]*model.Role {

utils/authorization_test.go

@@ -14,7 +14,7 @@ import (
 
 	"github.com/stretchr/testify/require"
 
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type RoleState struct {

utils/i18n.go

@@ -8,8 +8,8 @@ import (
 	"os"
 	"path/filepath"
 
-	"github.com/mattermost/mattermost-server/v5/shared/i18n"
-	"github.com/mattermost/mattermost-server/v5/utils/fileutils"
+	"github.com/mattermost/mattermost-server/v6/shared/i18n"
+	"github.com/mattermost/mattermost-server/v6/utils/fileutils"
 )
 
 // this functions loads translations from filesystem if they are not

utils/imgutils/gif_test.go

@@ -10,7 +10,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
-	"github.com/mattermost/mattermost-server/v5/utils/testutils"
+	"github.com/mattermost/mattermost-server/v6/utils/testutils"
 )
 
 func TestCountFrames(t *testing.T) {

utils/jsonutils/json_test.go

@@ -11,7 +11,7 @@ import (
 	"github.com/pkg/errors"
 	"github.com/stretchr/testify/assert"
 
-	"github.com/mattermost/mattermost-server/v5/utils/jsonutils"
+	"github.com/mattermost/mattermost-server/v6/utils/jsonutils"
 )
 
 func TestHumanizeJsonError(t *testing.T) {

utils/license.go

@@ -17,9 +17,9 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/mattermost/mattermost-server/v5/model"
-	"github.com/mattermost/mattermost-server/v5/shared/mlog"
-	"github.com/mattermost/mattermost-server/v5/utils/fileutils"
+	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/shared/mlog"
+	"github.com/mattermost/mattermost-server/v6/utils/fileutils"
 )
 
 var publicKey []byte = []byte(`-----BEGIN PUBLIC KEY-----

utils/logger.go

@@ -7,9 +7,9 @@ import (
 	"path/filepath"
 	"strings"
 
-	"github.com/mattermost/mattermost-server/v5/model"
-	"github.com/mattermost/mattermost-server/v5/shared/mlog"
-	"github.com/mattermost/mattermost-server/v5/utils/fileutils"
+	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/shared/mlog"
+	"github.com/mattermost/mattermost-server/v6/utils/fileutils"
 )
 
 const (

utils/merge_test.go

@@ -11,7 +11,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
-	"github.com/mattermost/mattermost-server/v5/utils"
+	"github.com/mattermost/mattermost-server/v6/utils"
 )
 
 // Test merging maps alone. This isolates the complexity of merging maps from merging maps recursively in

utils/mocks/LicenseValidatorIface.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"
 )
 

utils/subpath.go

@@ -17,9 +17,9 @@ import (
 
 	"github.com/pkg/errors"
 
-	"github.com/mattermost/mattermost-server/v5/model"
-	"github.com/mattermost/mattermost-server/v5/shared/mlog"
-	"github.com/mattermost/mattermost-server/v5/utils/fileutils"
+	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/shared/mlog"
+	"github.com/mattermost/mattermost-server/v6/utils/fileutils"
 )
 
 // getSubpathScript renders the inline script that defines window.publicPath to change how webpack loads assets.

utils/subpath_test.go

@@ -13,8 +13,8 @@ import (
 
 	"github.com/stretchr/testify/require"
 
-	"github.com/mattermost/mattermost-server/v5/model"
-	"github.com/mattermost/mattermost-server/v5/utils"
+	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/utils"
 )
 
 func TestUpdateAssetsSubpathFromConfig(t *testing.T) {

utils/testutils/static_config_service.go

@@ -6,7 +6,7 @@ package testutils
 import (
 	"crypto/ecdsa"
 
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type StaticConfigService struct {

utils/testutils/testutils.go

@@ -14,9 +14,9 @@ import (
 	"strconv"
 	"time"
 
-	"github.com/mattermost/mattermost-server/v5/utils"
+	"github.com/mattermost/mattermost-server/v6/utils"
 
-	"github.com/mattermost/mattermost-server/v5/utils/fileutils"
+	"github.com/mattermost/mattermost-server/v6/utils/fileutils"
 )
 
 func ReadTestFile(name string) ([]byte, error) {

utils/utils.go

@@ -12,7 +12,7 @@ import (
 
 	"github.com/pkg/errors"
 
-	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 func StringInSlice(a string, slice []string) bool {