[FEATURE] Integrate sample data in unittest workflow

[kshitijrajsharma]

In order to test endpoints with sample data during code development testing , Github workflow needs to run in real environment with data populated in test database along with the config section . So plan is to use postgres service and use that service in testing with pre populated data provided by sample sql dump in API
This will solve and makes it easy to implement test cases for API .
This issue should address the current github action unit test failing and provide sample db in unittest for this PR