Use plain output for up-to-date message in update command

- Replace style.Successf with fmt.Fprintf for the "already up to date" message
- Keeps output simple and consistent with non-styled update flow

Author: jai-deepsource

command/update/update.go

@@ -38,7 +38,7 @@ func runUpdate(cmd *cobra.Command) error {
 
 	if state == nil {
 		bi := buildinfo.GetBuildInfo()
-		style.Successf(w, "Already up to date (v%s)", bi.Version)
+		fmt.Fprintf(w, "Already up to date (v%s)\n", bi.Version)
 		return nil
 	}