chore: bump otto-de/purge-deprecated-workflow-runs from 3.0.4 to 4.0.1

Bumps [otto-de/purge-deprecated-workflow-runs](https://github.com/otto-de/purge-deprecated-workflow-runs) from 3.0.4 to 4.0.1.
- [Release notes](https://github.com/otto-de/purge-deprecated-workflow-runs/releases)
- [Commits](otto-de/purge-deprecated-workflow-runs@6fcf966...b8ceac7)

---
updated-dependencies:
- dependency-name: otto-de/purge-deprecated-workflow-runs
  dependency-version: 4.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.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@6fcf966b89e5907a9965946adb9a9d89dc312220  # v 3.0.4
+        uses: otto-de/purge-deprecated-workflow-runs@b8ceac732062811963f2fc597a537a4f7ca60455  # v 4.0.1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           remove-obsolete: true