pre-commit autoupdate 2026-03-27

[cclauss]

% pre-commit autoupdate

[https://github.com/pre-commit/pre-commit-hooks] updating v4.0.1 -> v6.0.0
[https://github.com/pycqa/isort] updating 5.11.5 -> 8.0.1
[https://github.com/pycqa/flake8] updating 5.0.4 -> 7.3.0
[https://github.com/psf/black] updating 22.6.0 -> 26.3.1
[https://github.com/pre-commit/mirrors-mypy] updating v0.971 -> v1.19.1  # I reverted the mypy upgrade.
[https://github.com/espressif/check-copyright/] updating v1.0.1 -> v1.1.2

% pre-commit run --all-files

psf/black changes for the "stable style 2026". https://black.readthedocs.io/en/stable/the_black_code_style/index.html