SIENTIAPDE-1325

Enhance release workflow to trigger only on merged pull requests and streamline data insertion in DataManager

- Updated the release workflow to execute only when a pull request is merged.
- Simplified the document insertion logic in DataManager by consolidating the dictionary construction.
- Refactored OPC Manager tests to utilize asynchronous mocks for improved accuracy in testing.

ingestor/managers/data_manager.py

@@ -261,10 +261,7 @@ class DataManager(SientiaMonitoring):
         try:
             await self.mongo_repository.insert(
                 collection_name=topic,
-                document={
-                    **data,
-                    'inserted_at': now()
-                },
+                document={**data, 'inserted_at': now()},
                 metadata=self.metadata,
             )
             self.logger.debug(f'Message inserted into MongoDB collection {topic}: {data}')