Added extra integration test cases for the in-situ ETL pipeline

[github-actions[bot]]

☂️ Python Coverage

current status: ✅

Overall Coverage

Lines	Covered	Coverage	Threshold	Status
773	726	94%	80%	🟢

New Files

No new covered files...

Modified Files

File	Coverage	Status
air-quality-backend/src/air_quality/api/types.py	100%	🟢
TOTAL	100%	🟢

updated for commit: 90cedc1 by action🐍