ci: run renovate from gitea actions with autodiscovery

.gitea/workflows/renovate.yaml

@@ -0,0 +1,27 @@
+name: Renovate
+
+on:
+  schedule:
+    # UTC. Each repository's renovate.json decides when PRs open; daily runs pick up
+    # updates approved on its dependency dashboard.
+    - cron: "17 2 * * *"
+  workflow_dispatch:
+
+jobs:
+  renovate:
+    runs-on: ubuntu-latest
+    container: ghcr.io/renovatebot/renovate:44
+    steps:
+      - name: Run Renovate
+        env:
+          RENOVATE_PLATFORM: gitea
+          RENOVATE_ENDPOINT: https://git.neuf.no/api/v1
+          RENOVATE_TOKEN: ${{ secrets.RENOVATE_TOKEN }}
+          RENOVATE_GIT_AUTHOR: Renovate <renovate@neuf.no>
+          # Every edb repository the renovate account can write to
+          RENOVATE_AUTODISCOVER: "true"
+          RENOVATE_AUTODISCOVER_FILTER: edb/*
+          # Raises the GitHub API rate limit for release notes and github-tags lookups
+          GITHUB_COM_TOKEN: ${{ secrets.RENOVATE_GITHUB_COM_TOKEN }}
+          LOG_LEVEL: info
+        run: renovate