fix: mlflow versioning

[rcmalli]

Summary

This PR fixes Mlflow versioning including skinny package. Previously, later versions of mlflow-skinny could be installed even if we fix mlflow package version. In the future releases, we can drop the dependency of mlflow and add only mlflow-skinny.

Type of Change

• Bug fix (non-breaking change that solves an issue)

Checklist

• I have tested my changes locally and they work as expected. (Please describe the tests you performed.)
• I have added unit tests for my changes, or updated existing tests if necessary.
• I have updated the documentation, if applicable.
• I have installed pre-commit and run locally for my code changes.