Michael Vetter 91911b3e2f ci: Update clang-format to version 21 ...

Update the gh workflow to pin clang-format to version 21.

Mention the version we use in CONTRIBUTING.md.
And hint to the workflow file if we want to change it.

2026-02-28 14:52:36 +01:00

..

cygwin-build.yml

ci: add Cygwin build workflow

2026-01-24 19:53:18 +05:30

main.yml

ci: Update clang-format to version 21

2026-02-28 14:52:36 +01:00