Upgrade Go to 1.24.3 (#31220)

* Upgrade Go to 1.24.3

Updates the following files:
- server/.go-version: 1.23.9 → 1.24.3
- server/build/Dockerfile.buildenv: golang:1.23.9-bullseye → golang:1.24.3-bullseye
- server/go.mod: go 1.23.0 → go 1.24.3, toolchain go1.23.9 → go1.24.3
- server/public/go.mod: go 1.23.0 → go 1.24.3, toolchain go1.23.9 → go1.24.3

Also fixes non-constant format string errors introduced by Go 1.24.3's stricter format string checking:
- Added response() helper function in slashcommands/util.go for simple string responses
- Removed unused responsef() function from slashcommands/util.go
- Replaced responsef() with response() for translated strings that don't need formatting
- Fixed fmt.Errorf and fmt.Fprintf calls to use proper format verbs instead of string concatenation
- Updated marketplace buildURL to handle format strings conditionally

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Update generated mocks for Go 1.24.3

Regenerated mocks using mockery v2.53.4 to ensure compatibility with Go 1.24.3.
This addresses mock generation failures that occurred with the Go upgrade.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Update to bookworm and fix non-existent sha

Signed-off-by: Stavros Foteinopoulos <stafot@gmail.com>

* fix non-constant format string

---------

Signed-off-by: Stavros Foteinopoulos <stafot@gmail.com>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Stavros Foteinopoulos <stafot@gmail.com>

server/einterfaces/mocks/ClusterInterface.go

@@ -1,4 +1,4 @@
-// Code generated by mockery v2.42.2. DO NOT EDIT.
+// Code generated by mockery v2.53.4. DO NOT EDIT.
 
 // Regenerate this file using `make einterfaces-mocks`.
 
@@ -68,7 +68,7 @@ func (_m *ClusterInterface) GenerateSupportPacket(rctx request.CTX, options *mod
 	return r0, r1
 }
 
-// GetClusterId provides a mock function with given fields:
+// GetClusterId provides a mock function with no fields
 func (_m *ClusterInterface) GetClusterId() string {
 	ret := _m.Called()
 
@@ -86,7 +86,7 @@ func (_m *ClusterInterface) GetClusterId() string {
 	return r0
 }
 
-// GetClusterInfos provides a mock function with given fields:
+// GetClusterInfos provides a mock function with no fields
 func (_m *ClusterInterface) GetClusterInfos() ([]*model.ClusterInfo, error) {
 	ret := _m.Called()
 
@@ -180,7 +180,7 @@ func (_m *ClusterInterface) GetLogs(ctx request.CTX, page int, perPage int) ([]s
 	return r0, r1
 }
 
-// GetMyClusterInfo provides a mock function with given fields:
+// GetMyClusterInfo provides a mock function with no fields
 func (_m *ClusterInterface) GetMyClusterInfo() *model.ClusterInfo {
 	ret := _m.Called()
 
@@ -200,7 +200,7 @@ func (_m *ClusterInterface) GetMyClusterInfo() *model.ClusterInfo {
 	return r0
 }
 
-// GetPluginStatuses provides a mock function with given fields:
+// GetPluginStatuses provides a mock function with no fields
 func (_m *ClusterInterface) GetPluginStatuses() (model.PluginStatuses, *model.AppError) {
 	ret := _m.Called()
 
@@ -262,7 +262,7 @@ func (_m *ClusterInterface) GetWSQueues(userID string, connectionID string, seqN
 	return r0, r1
 }
 
-// HealthScore provides a mock function with given fields:
+// HealthScore provides a mock function with no fields
 func (_m *ClusterInterface) HealthScore() int {
 	ret := _m.Called()
 
@@ -280,7 +280,7 @@ func (_m *ClusterInterface) HealthScore() int {
 	return r0
 }
 
-// IsLeader provides a mock function with given fields:
+// IsLeader provides a mock function with no fields
 func (_m *ClusterInterface) IsLeader() bool {
 	ret := _m.Called()
 
@@ -363,12 +363,12 @@ func (_m *ClusterInterface) SendClusterMessageToNode(nodeID string, msg *model.C
 	return r0
 }
 
-// StartInterNodeCommunication provides a mock function with given fields:
+// StartInterNodeCommunication provides a mock function with no fields
 func (_m *ClusterInterface) StartInterNodeCommunication() {
 	_m.Called()
 }
 
-// StopInterNodeCommunication provides a mock function with given fields:
+// StopInterNodeCommunication provides a mock function with no fields
 func (_m *ClusterInterface) StopInterNodeCommunication() {
 	_m.Called()
 }