chore(deps): update ghcr.io/renovatebot/renovate:latest docker digest to 21e2e5e (#26)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| ghcr.io/renovatebot/renovate | container | digest | `b316b29` -> `21e2e5e` |

---

### Configuration

📅 **Schedule**: Branch creation - "every weekend" (UTC), Automerge - At any time (no schedule defined).

🚦 **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:eyJjcmVhdGVkSW5WZXIiOiI0MS4zMS4xIiwidXBkYXRlZEluVmVyIjoiNDEuMzEuMSIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOltdfQ==-->

Reviewed-on: #26
Co-authored-by: Renovate Bot <renovatebot@schulze.network>
Co-committed-by: Renovate Bot <renovatebot@schulze.network>

.gitea/workflows/renovate.yaml

@@ -10,7 +10,7 @@ on:
 jobs:
   renovate:
     runs-on: ubuntu-latest
-    container: ghcr.io/renovatebot/renovate:latest@sha256:b93b155f9bf916de8494c99a2b771a566cd986a74b0cba6fb2b26a2df2a10a2c
+    container: ghcr.io/renovatebot/renovate:latest@sha256:21e2e5e8c51537649b5d9d1e85c0085aa5f53d5d198e2400d5ecc1e2448f9e9a
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
       - run: renovate

renovate.json

@@ -1,11 +1,16 @@
 {
-  "extends": ["config:best-practices", ":semanticCommits"],
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended"
+  ],
   "packageRules": [
     {
-      "matchUpdateTypes": ["minor", "patch", "pin", "digest"],
+      "description": "Automerge Renovate package updates without status checks",
+      "matchPackageNames": [
+        "renovate"
+      ],
       "automerge": true,
-      "automergeType": "branch"
+      "ignoreTests": true
     }
   ]
 }