clang/debug is disabled in actions as valgrind fails for that combination.

[wc-duck]

See https://bugzilla.mozilla.org/show_bug.cgi?id=1758782 and https://bugs.kde.org/show_bug.cgi?id=457412

[Tisten]

It is marked as resolved with new versions of valgrind. But getting a new version of valgrind in github actions is a bit tricky.

I got valgrind 3.22 using brew on wsl and it worked fine with clang/debug