[pre-commit.ci] pre-commit autoupdate

[pre-commit-ci]

updates:

• https://github.com/psf/black → https://github.com/psf/black-pre-commit-mirror
• github.com/psf/black-pre-commit-mirror: 25.1.0 → 26.5.1
• github.com/PyCQA/autoflake: v2.3.1 → v2.3.3
• github.com/PyCQA/isort: 6.0.1 → 9.0.0b1
• github.com/pre-commit/pre-commit-hooks: v5.0.0 → v6.0.0
• github.com/mgedmin/check-manifest: 0.50 → 0.51

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (07faf0a) to head (10449d1).

Additional details and impacted files

@@            Coverage Diff            @@
##             trunk      #836   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           48        48           
  Lines         3981      3981           
  Branches       182       182           
=========================================
  Hits          3981      3981           

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[cjwatson]

#889 should fix the failures that are blocking this at the moment.

[cjwatson]

The CI failures are due to black's 2026 stable style, which slightly conflicts with our current isort configuration. Removing lines_after_imports = 2 from .isort.cfg would fix the CI failures. See PyCQA/isort#2452.

@wsanchez, you added lines_after_imports = 2 to begin with; would you have a strong objection to removing it now?