CI: Update gha-puppet v3->v4

Author: bastelfreak

.github/workflows/ci.yml

@@ -17,7 +17,6 @@ concurrency:
 jobs:
   puppet:
     name: Puppet
-    uses: voxpupuli/gha-puppet/.github/workflows/beaker.yml@v3
+    uses: voxpupuli/gha-puppet/.github/workflows/beaker.yml@v4
     with:
-      pidfile_workaround: 'false'
       rubocop: false