Remove unnecessary checkout step and narrow set +e scope in cache cleanup workflow

Co-authored-by: BenjaminMichaelis <22186029+BenjaminMichaelis@users.noreply.github.com>

Author: Copilot

.github/workflows/cleanup-caches.yml

@@ -7,15 +7,11 @@ on:
 
 permissions:
   actions: write
-  contents: read
 
 jobs:
   cleanup:
     runs-on: ubuntu-latest
     steps:
-      - name: Check out code
-        uses: actions/checkout@v6
-
       - name: Cleanup
         run: |
           gh extension install actions/gh-actions-cache
@@ -24,13 +20,14 @@ jobs:
           BRANCH="refs/pull/${{ github.event.pull_request.number }}/merge"
           echo "Fetching list of cache keys"
           cacheKeysForPR=$(gh actions-cache list -R $REPO -B $BRANCH | cut -f 1)
-          ## Setting this to not fail the workflow while deleting cache keys.
-          set +e
           echo "Deleting caches..."
+          ## Temporarily disable errexit so individual delete failures don't abort the loop.
+          set +e
           for cacheKey in $cacheKeysForPR
           do
               gh actions-cache delete $cacheKey -R $REPO -B $BRANCH --confirm
           done
+          set -e
           echo "Done"
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}