Bump actions/delete-package-versions from 4 to 5 (#1)

Bumps [actions/delete-package-versions](https://github.com/actions/delete-package-versions) from 4 to 5.
- [Release notes](https://github.com/actions/delete-package-versions/releases)
- [Commits](actions/delete-package-versions@v4...v5)

---
updated-dependencies:
- dependency-name: actions/delete-package-versions
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/cleanup.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Delete untagged container images older than 2 months
-        uses: actions/delete-package-versions@v4
+        uses: actions/delete-package-versions@v5
         with: 
           package-name: 'jekyll-in-a-can'
           package-type: 'container'