Create workflow for ForgeJo actions

.forgejo/workflows/renovate.yaml

@@ -0,0 +1,26 @@
+name: renovate
+
+on:
+  push:
+  workflow_dispatch:
+  schedule:
+    - cron: "* */4 * * *"
+
+jobs:
+  renovate:
+    runs-on: docker
+    container: ghcr.io/renovatebot/renovate:37.146.0
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Validate config
+        run: |
+          renovate-config-validator
+
+      - name: Self-hosted Renovate
+        run: |
+          renovate
+        env:
+          RENOVATE_TOKEN: ${{ secrets.RENOVATE_TOKEN }}
+          GITHUB_COM_TOKEN: ${{ secrets.PERSONAL_TOKEN_GITHUB }}