Small clean up of dependencies and environment

[aulemahal]

Pull Request Checklist:

• This PR addresses an already opened issue (for bug fixes / features)
  • This PR fixes xESMF as indirect dependency #1376
• Tests for the changes have been added (for bug fixes / features)
  • (If applicable) Documentation has been added / updated (for bug fixes / features)
• CHANGES.rst has been updated (with summary of main changes)
  • Link to issue (:issue:number) and pull request (:pull:number) has been added

What kind of change does this PR introduce?

• Removes clisops from the environment.yml, which removes the indirect dev dependency to xESMF.
• While missing around I realized we make an explicit import of filelock, without listing it in the env (it's a dep of tox).
• statsmodels was in the "dev" deps section, but is a hard dep.
• On my machine at least, the pin of pylint was blocking the creation of an env with python 3.11. I removed it and it seems to work. I modified the rc file slightly to suppress one warning in the output. And, comble de l'ironie, running pylint in my older env (python 3.10, pylint 2.14) failed... So I leave the study of why it was pinned and if it is safe to unpin it to @Zeitsperre .

Does this PR introduce a breaking change?

No

Other information:

This might be a step towards #1268 !

[Zeitsperre]

I just landed on this post thinking, "will this work, maybe?" tox-dev/sphinx-autodoc-typehints#186 (comment)

It was me. I wrote the post. ...

[Zeitsperre]

Theory: My workaround to deal with the fact that we can't supply Parameter to a static type definition (by just making it a string) is ignored under Python3.11.

There's a possibility that this could be fixed with the latest sphinx/sphinx-autodoc-typehints, but we can't install it due to limitations with sphinx_rtd_theme (it's effectively unmaintained). Changing to a different theme (like Furo, used in Miranda) involves some changes to our sphinx configuration, but maybe it would be worthwhile investigating soon? This merits its own issue, tbh.

In any case, problems resolved. It had nothing to do with the pylint pin.

[Zeitsperre]

Update: The warnings appear to be due to an __annotations__ quirk: https://docs.python.org/3/howto/annotations.html#annotations-quirks

[coveralls]

coverage: 90.604%. remained the same when pulling 8a50fb5 on cleanenv-py311 into e7664ee on master.

[Zeitsperre]

All this needs is an entry under CHANGES.rst and we can merge!