Added GitHub Actions config.

.github/workflows/renovate.yml

@@ -0,0 +1,25 @@
+name: Renovate
+on:
+  schedule:
+    - cron: '45 * * * *'
+jobs:
+  renovate:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/[email protected]
+      - uses: suzuki-shunsuke/[email protected]
+      - name: Self-hosted Renovate
+        uses: renovatebot/[email protected]
+        env:
+          # Update the value of RENOVATE_GIT_AUTHOR with your own.
+          RENOVATE_GIT_AUTHOR: 'Renovate Self Hosted <[email protected]>'
+          RENOVATE_DEPENDENCY_DASHBOARD_TITLE: 'Renovate Dependency Dashboard (self-hosted) by GitHub Actions'
+          RENOVATE_DEPENDENCY_DASHBOARD: true
+          RENOVATE_REPOSITORIES: ${{ github.repository }}
+          RENOVATE_PLATFORM: 'github'
+          RENOVATE_AUTODISCOVER: false
+          RENOVATE_DRY_RUN: false
+        with:
+          configurationFile: renovate.json
+          token: ${{ secrets.RENOVATE_TOKEN }}