fix(actions): call automerge service on successful commit state

- Backport of https://github.com/go-gitea/gitea/pull/30225

services/actions/commit_status.go

@@ -15,6 +15,7 @@ import (
 	"code.gitea.io/gitea/modules/log"
 	api "code.gitea.io/gitea/modules/structs"
 	webhook_module "code.gitea.io/gitea/modules/webhook"
+	files_service "code.gitea.io/gitea/services/repository/files"
 
 	"github.com/nektos/act/pkg/jobparser"
 )
@@ -114,19 +115,16 @@ func createCommitStatus(ctx context.Context, job *actions_model.ActionRunJob) er
 	}
 
 	creator := user_model.NewActionsUser()
-	if err := git_model.NewCommitStatus(ctx, git_model.NewCommitStatusOptions{
-		Repo:    repo,
-		SHA:     sha,
-		Creator: creator,
-		CommitStatus: &git_model.CommitStatus{
+	if err := files_service.CreateCommitStatus(ctx, repo, creator,
+		sha,
+		&git_model.CommitStatus{
 			SHA:         sha,
 			TargetURL:   fmt.Sprintf("%s/jobs/%d", run.Link(), index),
 			Description: description,
 			Context:     ctxname,
 			CreatorID:   creator.ID,
 			State:       state,
-		},
-	}); err != nil {
+		}); err != nil {
 		return fmt.Errorf("NewCommitStatus: %w", err)
 	}