Improvements to our noxfile

[DiddiLeija]

Changes:

• Add Python 3.10 to our conda_test session, since GHA already supports Conda (see Add Python 3.10 for conda #501).

• Add docs/conf.py to the files where session lint will run, to be the same than the blacken step (see Improve the Sphinx config file #499).

[DiddiLeija]

• Add docs/conf.py to the files where session lint will run, to be the same than the blacken step (see Improve the Sphinx config file #499).

Hmm... this step made flake8 to be unhappy with docs/conf.py. But now I'm not sure if session lint should run linters on
that file. The error is related to these lines:

https://github.com/theacodes/nox/blob/cbd9d2d8ed792ba8ada911e30fb00b300e7db39d/docs/conf.py#L242-L249

and some others. Do I have to fix them? Or should I remove docs/conf.py from the linter files?

[cjolowicz]

Thanks for taking care of this!

Adding the Sphinx config to the linter checks is a good thing IMO. I'd just apply the few proposed fixes so we can get the file into our check suite.

[DiddiLeija]

I'd just apply the few proposed fixes so we can get the file into our check suite.

Done!

[cjolowicz]

🎉

[dhermes]

LGTM