feat: add TTL index functionality to MongoDB activities and update requirements
- Updated MongoDB class to accept TTL index duration in seconds.
- Implemented create_collection_with_ttl_index method to create collections with TTL indexes.
- Added environment variable for TTL index duration in connectors_config.
- Updated tests to cover new TTL index functionality and ensure proper behavior.
- Bumped sientia-dataops-library version to 1.3.4 in requirements.txt.
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