SIENTIAPDE-1171

Update dependencies and enhance ML model retraining functionality

- Updated sientia-dataops-library version in requirements.txt from 1.3.3 to 1.3.4.
- Incremented image tag in values.yaml from 0.2.4 to 0.2.5 and added a new environment variable MONGODB_TTL_INDEX_HOURS.
- Introduced new methods in MLFlowRepository for model retraining and production model updates, including error handling and logging.
- Added retrain_model and update_production_model activities in mlflow.py to support model management workflows.
- Modified MongoDB connection settings in connectors_config.py for improved security and configuration flexibility.

requirements.txt

@@ -3,5 +3,5 @@ psycopg2-binary
 sqlalchemy
 asyncua
 redis
-git+ssh://git@github.com/Aignosi/sientia-dataops-library.git@1.3.3
+git+ssh://git@github.com/Aignosi/sientia-dataops-library.git@1.3.4
 git+ssh://git@github.com/Aignosi/sientia-mlops-library.git@0.38.1