Fixing pip installation vulnerability in ls_metrics script

[raj-prince]

Description

One of the vulnerabilities was to install the python module dependency by enabling the check-sum. Hence, we would need to keep the hash for the pip dependencies.

Steps:

1. Create a requirements.in file with all the python dependency.
2. Use pip-compile requirements.in this will generated requirement.txt with hash.
3. Use pip install --require-hash -r requirements.txt to install the dependency.

Link to the issue in case of a bug fix.

Testing details

1. Manual - Manually verified by running the script offline. End to end test (upload workflow) will happen as a part of CI/CD.
2. Unit tests
3. Integration tests