SIENTIAPDE-1193

chore: update image tag and enhance datetime column handling in orchestrator functions

- Updated the image tag in values.yaml from 0.4.2 to 0.4.4 for the latest version.
- Added support for datetime_columns in minimal_retrain and predictions_batch functions to improve timestamp handling in orchestrator functions.

orchestrator/utils/orchestrator_functions.py

@@ -48,6 +48,7 @@ def minimal_retrain(config: dict[str, Any]):
         "query": config['query'],
         "schema": "sientia_data",
         "table_name": "log_retrain",
+        "datetime_columns": config.get('datetime_columns', []),
     }
 
 
@@ -187,6 +188,7 @@ def predictions_batch(config: dict[str, Any]):
         **common_config(config),
 
         "query": config['query'],
+        "datetime_columns": config.get('datetime_columns', []),
         "schema": "sientia_data",
         "table_name": "predictions",
         "retention_time": config.get('model_retention_minutes', 60) * 60,