SIENTIAPDE-1205

SIENTIAPDE-1205: Simplify timestamp formatting in MongoDB activities

- Removed timezone conversion from timestamp handling in mongo_db.py, streamlining the formatting process while maintaining consistency with DATETIME_FORMAT_MS_WITH_TZ.

orchestrator/activities/mongo_db.py

@@ -459,7 +459,7 @@ class MongoDB(BaseActivity):
             )
 
             for item in data:
-                item['timestamp'] = item['timestamp'].replace(tzinfo=timezone.utc).strftime(
+                item['timestamp'] = item['timestamp'].strftime(
                     DATETIME_FORMAT_MS_WITH_TZ)
 
             self.info(