Update CVMFS action version

Author: ocaisa

action.yml

@@ -16,7 +16,7 @@ inputs:
 runs:
   using: "composite"
   steps:
-    - uses: cvmfs-contrib/github-action-cvmfs@cec5c94a14714ab02980682fce8ab3de238401f9 # v4.0 + MacOS support
+    - uses: cvmfs-contrib/github-action-cvmfs@204fd621e07d10a8cce4e73b9858b11bf6b95647  # v5.0 + MacOS support
       with:
         # Can't use config package for macOS but our repos are available with the default configuration anyway
         # cvmfs_config_package: https://github.com/EESSI/filesystem-layer/releases/download/latest/cvmfs-config-eessi_latest_all.deb