Clang CI recently started failing

[randombit]

Definitely looks to be some problem with the Ubuntu packaging, or something about the GHA image. It appears Clang 14 is installed but it is attempting to use libc++ 13

[randombit]

Already reported actions/runner-images#8659

[devnexen]

do you think using packages from apt.llvm.org would help ?

[randombit]

I think that would only help if we were to start using a newer clang, since the issue is that clang 14 doesn't understand what to do with gcc 13's libstdc++ chrono. But if we use a newer clang then we are no longer testing with our minimum required version, so inevitably we'll encounter build regressions by introducing something that works with other compilers but not clang 14.

[reneme]

Looks like GitHub Actions is rolling out a new image bringing this back yet again...
https://github.com/randombit/botan/actions/runs/7543153103/job/20533520177?pr=3887

[reneme]

Apparently the issue was recently closed upstream. Let's wait another week and then try w/o the workaround.