Spam in PR checks about skipped builds

[Mark-Simulacrum]

In some PRs, though not all, we see 7 (!) skipped checks. These are annoying to scroll through.

I don't think this is a blocker, but would be nice to see fixed. It's also concerning that there appears to be some non-determinism (the above output is from #71147, but e.g. #71166 does not have it); IMO making sure we know what the cause of that non-determinism is a blocker, as non-determinism of skipped builds in CI is quite concerning :)

cc @pietroalbini

[pietroalbini]

Reported this to GitHub, they'll look into it.

[camelid]

Any updates?

[pietroalbini]

Not yet.