Merge pull request #16 from CSCfi/dependabot/github_actions/snok/container-retention-policy-2.2.1

Bump snok/container-retention-policy from 2.1.2 to 2.2.1

Author: blankdots

Diff for: .github/workflows/clean-containers.yaml

@@ -20,7 +20,7 @@ jobs:
         run: |
           echo "REPO=${GITHUB_REPOSITORY,,}" >>${GITHUB_ENV}
       - name: Delete 'PR' containers older than a week
-        uses: snok/container-retention-policy@v2.1.2
+        uses: snok/container-retention-policy@v2.2.1
         with:
           image-names: ${{ env.REGISTRY }}/${{ env.REPO }}
           filter-tags: sha-*,sha256:*