fixed Configuration timestamp issue when added to History of Action

csharp/App/Backend/Controller.cs

@@ -967,7 +967,7 @@ public class Controller : ControllerBase
             var action = new UserAction
             {
                 InstallationId = installationId,
-                Timestamp = DateTime.Now,
+                Timestamp = DateTime.UtcNow,
                 Description = configString
             };