Bump Go version to 1.23.6 (#30242)

* Bump Go version to 1.23.6

* Update CodeQL Github action as well

* Use server's Go version for CodeQL action

Co-authored-by: Antonis Stamatiou <stamatiou.antonis@gmail.com>

* Empty commit to trigger CI

* Bump golangci-lint to a version supporting Go 1.23

* Fix golangci-lint warnings

Several rules from gosimple, revive and staticcheck linters were
failing:
- Redefinition of built-in identifiers (max, min, new, recover...)
- Use of printf-like functions with simple strings
- Check for nil slices, when len already takes it into account

---------

Co-authored-by: Antonis Stamatiou <stamatiou.antonis@gmail.com>
Co-authored-by: Mattermost Build <build@mattermost.com>

server/channels/app/authentication.go

@@ -284,8 +284,8 @@ func (a *App) MFARequired(rctx request.CTX) *model.AppError {
 	return nil
 }
 
-func checkUserLoginAttempts(user *model.User, max int) *model.AppError {
-	if user.FailedAttempts >= max {
+func checkUserLoginAttempts(user *model.User, maxAttempts int) *model.AppError {
+	if user.FailedAttempts >= maxAttempts {
 		return model.NewAppError("checkUserLoginAttempts", "api.user.check_user_login_attempts.too_many.app_error", nil, "user_id="+user.Id, http.StatusUnauthorized)
 	}