Update to latest actions/cache to fix cache saving on Windows with MS… …YS2 tar * See actions/toolkit#632 * Fixes ruby#102
Add test checking using an exact Bundler version works
Only set $BUNDLER_VERSION when needed (Bundler 1, Ruby >= 2.7)
Add 3.0.0-preview2
Fix value for options
Create the .complete file so tc.find() can find it for future runs fo… …r self-hosted runners
Fixup bundler version for rubies with bundler as a default gem Fixes ruby#117
GitHub Actions parses 3.0 as '3', so use quotes * And adapt excludes.
Run `bundle clean` when reusing a cache and the lockfile changed * Fixes ruby#113