Add Renovate configuration and workflow for automated dependency updates

.gitea/workflows/renovate.yml

@@ -0,0 +1,23 @@
+name: renovate
+
+on:
+  schedule:
+    - cron: "@daily"
+  workflow_dispatch:
+
+jobs:
+  renovate:
+    runs-on: ubuntu-latest
+    container:
+      image: renovate/renovate:41.97.7
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Run Renovate
+        env:
+          RENOVATE_TOKEN: ${{ secrets.RENOVATE_TOKEN }}
+          GITHUB_COM_TOKEN: ${{ secrets.PAT_TOKEN }}
+        run: |
+          renovate

config.js

@@ -0,0 +1,14 @@
+module.exports = {
+  platform: 'gitea',
+  endpoint: 'https://gitea.akshun-lab.cc/api/v1',
+  gitAuthor: 'Renovate Bot <renovate@akshun-lab.cc>',
+  username: 'renovate',
+  autodiscover: false,
+  onboardingConfig: {
+    $schema: 'https://docs.renovatebot.com/renovate-schema.json',
+    extends: ['config:recommended']
+  },
+  optimizeForDisabled: true,
+  persistRepoData: true,
+  repositories: ["aggarwalakshun/k3s"],
+}