Update pre-commits and pytest configuration

[lang-m]

• pre-commit: use ruff and ruff formatting to replace black, isort, flake8
• pre-commit: remove hard-coded Python version
• tests: convert all warnings to errors

[lang-m]

rebase

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (f10ee26) to head (4bde2f4).
Report is 13 commits behind head on master.

❗ Current head 4bde2f4 differs from pull request most recent head ca8470b

Please upload reports for the commit ca8470b to get more accurate results.

Additional details and impacted files

@@            Coverage Diff            @@
##            master       #49   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines           14        14           
=========================================
  Hits            14        14           

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