upgrade lint and test checks

[htz1992213]

Summary

Include a summary of major changes in bullet points:

• transform to ruff

Additional dependencies introduced (if any)

• ruff

TODO (if any)

If this is a work-in-progress, write something about what else needs
to be done

• fix errors invoked by ruff

Checklist

Work-in-progress pull requests are encouraged. Please put [WIP]
in the pull request title.

Before a pull request can be merged, the following items must be checked:

• Code is in the standard Python style. The easiest way to handle this
  is to run the following in the correct sequence on your local machine. Start with running
  black on your new code. This will automatically reformat
  your code to PEP8 conventions and removes most issues. Then run
  pycodestyle, followed by
  flake8.
• Docstrings have been added in the Google docstring format.
  Run pydocstyle on your code.
• Type annotations are highly encouraged. Run mypy to type check your code.
• Tests have been added for any new functionality or bug fixes.
• All linting and tests pass.