SIENTIAPDE-1325

Update logging in MLFlowRepository and OpcRepository to use unified logging methods

- Refactored logging calls in MLFlowRepository to replace `self.logger.info` and `self.logger.debug` with `self.info` and `self.debug` for consistency.
- Updated connection logging in OpcRepository to format the connection message properly.
- Adjusted test cases to reflect changes in logging behavior and ensure proper assertions.

laborious/activities/opc.py

@@ -105,7 +105,9 @@ class OPC(SientiaMonitoring):
                     attachment_content=error_data.get('attachment_content', None),
                 )
             else:
-                self.logger.info(f'OPC server {opc_id}:{server["server_name"]} connected successfully.')
+                self.logger.info(
+                    f'OPC server {opc_id}:{server["server_name"]} connected successfully.'
+                )
 
     async def write_data(
         self,