Changes:
Fix for #80, that is a fatal check for vcpkgCommitId
being a valid SHA1 hash (40 hex digits) is implemented.
Improved the documentation about vcpkgCommitId
.
Note: to keep your workflow up to date with bug and security fixes, just use the v7 branch to stay on the most recent v7.x version of this action, e.g., uses: lukka/run-vcpkg@v7