We use the action free-disk-space to remove stuff from the free runners that we don't use.

The action doesn't seem maintained anymore. E.g. there are the following PRs where the maintained didn't reply:

• perf: speed up deletings jlumbroso/free-disk-space#26
• Remove snapd and microsoft-edge-stable jlumbroso/free-disk-space#24

Task: evaluate those PRs and if they are worth it, fork the github action and maintain it under rust-lang org

We could also check if more packages we don't use could be removed