Update https://code.forgejo.org/actions/cascading-pr action to v2.2.1 (#717)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [https://code.forgejo.org/actions/cascading-pr](https://code.forgejo.org/actions/cascading-pr) | action | patch | `v2.2.0` -> `v2.2.1` |

---

### Release Notes

<details>
<summary>actions/cascading-pr (https://code.forgejo.org/actions/cascading-pr)</summary>

### [`v2.2.1`](https://code.forgejo.org/actions/cascading-pr/compare/v2.2.0...v2.2.1)

[Compare Source](https://code.forgejo.org/actions/cascading-pr/compare/v2.2.0...v2.2.1)

</details>

---

### Configuration

📅 **Schedule**: Branch creation - Between 12:00 AM and 03:59 AM ( * 0-3 * * * ) (UTC), Automerge - Between 12:00 AM and 03:59 AM ( * 0-3 * * * ) (UTC).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0MS4zMi4xIiwidXBkYXRlZEluVmVyIjoiNDEuMzIuMSIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOltdfQ==-->

Reviewed-on: https://code.forgejo.org/forgejo/runner/pulls/717
Reviewed-by: earl-warren <earl-warren@noreply.code.forgejo.org>
Co-authored-by: Renovate Bot <bot@kriese.eu>
Co-committed-by: Renovate Bot <bot@kriese.eu>

.forgejo/workflows/cascade-setup-forgejo.yml

@@ -16,7 +16,7 @@ jobs:
     if: >
       ! contains(forge.event.pull_request.title, '[skip cascade]')
     steps:
-      - uses: https://code.forgejo.org/actions/cascading-pr@v2.2.0
+      - uses: https://code.forgejo.org/actions/cascading-pr@v2.2.1
         with:
           origin-url: ${{ env.FORGEJO_SERVER_URL }}
           origin-repo: forgejo/runner