replace woodpecker ci with gitea actions

.gitea/workflows/renovate.yml

@@ -0,0 +1,24 @@
+name: Renovate
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 */6 * * *"
+
+jobs:
+  renovate:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Run Renovate
+        uses: renovatebot/github-action@v46
+        env:
+          RENOVATE_TOKEN: ${{ secrets.RENOVATE_TOKEN }}
+          RENOVATE_PLATFORM: gitea
+          RENOVATE_ENDPOINT: https://git.keligrubb.com
+          RENOVATE_AUTODISCOVER: "true"
+          RENOVATE_CONFIG_FILE: renovate.json
+          RENOVATE_GITHUB_COM_TOKEN: ${{ secrets.RENOVATE_GITHUB_COM_TOKEN }}