Fix cleanup workflow.

Author: mbobrovskyi

.github/workflows/cleanup.yaml

@@ -22,20 +22,10 @@ jobs:
   cleanup:
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/checkout@v4
       - name: Cleanup
-        run: |
-          echo "Fetching list of cache key"
-          cacheKeysForPR=$(gh cache list --ref $BRANCH --limit 100 --json id --jq '.[].id')
-
-          ## Setting this to not fail the workflow while deleting cache keys.
-          set +e
-          echo "Deleting caches..."
-          for cacheKey in $cacheKeysForPR
-          do
-              gh cache delete $cacheKey
-          done
-          echo "Done"
+        run: gh cache list --ref $BRANCH --json id --jq '.[].id' | xargs -I {} gh cache delete {}
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           GH_REPO: ${{ github.repository }}
-          BRANCH: refs/pull/${{ github.event.pull_request.number }}/merge
+          BRANCH: refs/pull/${{ github.event.number }}/merge