[CI][Dev] Evaluate sccache 4.0 gha caching #15262
Description
Describe the enhancement requested
sccache 4.0.0 will contain a storage backend using gha caching which seems to work around the existing issues with the normal use of actions/cache for caching compilation caches by caching the artifacts separately.
If this works we can transition from ccache to sccache in the main repo (+crossbow) and stop using the wasteful workaround we are currently using.
Component(s)
Continuous Integration, Developer Tools