Update workflows

[corviday]

Fixes a couple things missed during the big maintenance PR. The only substantive changes to this PR are the two files in the .github/workflows directory; everything else is just black formatting changes.

1. Adds a code format check with black on commit
2. Fixes the broken pypi publishing script, which was still using setup.py

Question about pypi publishing: most of our other repositories with a pypi publish script, like this one, install the package before building it. When I tried to follow that procedure here, I ran into errors installing gdal, so I just removed the poetry install step.

Things seem to be working, the workflow completes, version 3.6.6 is available on our pypi, and I was able to add it to a new python project. Are there any hidden problems with skipping the install step?

Resolves #251

[QSparks]

LGTM!
For your question about the poetry installation step with GDAL, I believe it could be failing because the Ubuntu 24.04 runner lacks the necessary system libraries for GDAL (gdal-bin and libgdal-dev).