Fix qa

[elfkuzco]

Rationale

openzim/_python-bootstrap#56 introduced new changes to improve qa and fix conflicts between ruff and black. This PR ports those changes to the CMS components

[codecov]

Codecov Report

❌ Patch coverage is 83.33333% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 81.59%. Comparing base (1df5c12) to head (2ded5ef).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
backend/src/cms_backend/api/token.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #286   +/-   ##
=======================================
  Coverage   81.59%   81.59%           
=======================================
  Files          58       58           
  Lines        2570     2570           
  Branches      258      258           
=======================================
  Hits         2097     2097           
  Misses        404      404           
  Partials       69       69           

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[benoit74]

LGTM