chore: bump otto-de/purge-deprecated-workflow-runs from 2.1.0 to 2.2.0

Bumps [otto-de/purge-deprecated-workflow-runs](https://github.com/otto-de/purge-deprecated-workflow-runs) from 2.1.0 to 2.2.0.
- [Release notes](https://github.com/otto-de/purge-deprecated-workflow-runs/releases)
- [Commits](otto-de/purge-deprecated-workflow-runs@444ef39...8643c9c)

---
updated-dependencies:
- dependency-name: otto-de/purge-deprecated-workflow-runs
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/purge-deprecated-workflow-runs.yml

@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - name: Purge Deprecated Workflow Runs
-        uses: otto-de/purge-deprecated-workflow-runs@444ef393e03e89bc044fee35d26fb9c474ffe4ad  # v 2.1.0
+        uses: otto-de/purge-deprecated-workflow-runs@8643c9c6325111a6022dd314151198ced448ff00  # v 2.2.0
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           remove-obsolete: true