[Actions] Fix runtime of cuda build job

[ppraegla]

The cuda build job, introduced in #2012 , takes about 2 hours. Apparently, ccache is not working correctly. Maybe the compiler wrapper clangcuda++ prevents the correct usage of ccache. In cuda build job, when restoring ccache, only 1 MB is downloaded, compared to ~500 MB in the other jobs.

FYI: @PhilipOesterlePekrun

[PhilipOesterlePekrun]

Yes, I've been trying to fix this. Maybe we should temporarily turn it off until I figure it out, so as not to bottleneck current PRs and such? I can make a PR to temporarily remove/disable the kokkoscuda_build workflow right now if you agree.

[ppraegla]

I think it makes sense to disable the cuda build for now. We should still aim to get this fixed soon to prevent failing builds once the cuda build is activated again.