MNT: replace black and isort with ruff format and lint

[mwtoews]

This maintenance PR does the following:

• Replace Black with the Ruff formatter
• Replace isort with Ruff's "I" lint check
• Update the Ruff version in pre-commit, which changes a few source files
• Remove target-version from ruff configuration, since this is automatically evaluated
• Add ruff to requirements-dev.txt
• Update relevant excerpts of CONTRIBUTING.md with these changes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.56%. Comparing base (6a38287) to head (9bd3aff).
Report is 30 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1496      +/-   ##
==========================================
+ Coverage   96.50%   96.56%   +0.06%     
==========================================
  Files          20       20              
  Lines        1830     1833       +3     
==========================================
+ Hits         1766     1770       +4     
+ Misses         64       63       -1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[snowman2]

I am okay removing isort. However, I am not sure about black. Do the formatters conflict?

[mwtoews]

The Ruff formatter is a drop-in replacement for Black, but much faster (100x). According to these docs "> 99.9% of lines are formatted identically", so this may explain some minor differences of formatting found in this PR.

[snowman2]

Sounds worth a try. Can always swap it back later. Probably should remove the black badge in the readme.

[snowman2]

Thanks @mwtoews 👍