Add Renovate configuration for dependency updates

.forgejo/workflows/renovate.yaml

@@ -0,0 +1,25 @@
+name: Renovate
+
+on:
+  schedule:
+    # Run daily at 6:00 AM UTC
+    - cron: '0 6 * * *'
+  workflow_dispatch:
+
+jobs:
+  renovate:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v6
+
+      - name: Run Renovate
+        uses: renovatebot/github-action@v42.0.4
+        with:
+          configurationFile: renovate.json
+          token: ${{ secrets.RENOVATE_TOKEN }}
+        env:
+          RENOVATE_PLATFORM: gitea
+          RENOVATE_ENDPOINT: ${{ secrets.FORGEJO_ENDPOINT }}
+          RENOVATE_GIT_AUTHOR: Renovate Bot <bot@renovateapp.com>
+          LOG_LEVEL: info

renovate.json

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+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": ["config:base"],
+  "platform": "gitea",
+  "username": "renovate[bot]",
+  "gitAuthor": "Renovate Bot <bot@renovateapp.com>",
+  "repositories": ["graham/aprs.me"],
+  "branchPrefix": "renovate/",
+  "semanticCommits": "enabled",
+  "dependencyDashboard": true,
+  "labels": ["dependencies"],
+  "schedule": ["every day"],
+  "timezone": "UTC",
+  "prConcurrentLimit": 10,
+  "prCreation": "immediate",
+  "automerge": false,
+  "rangeStrategy": "bump",
+  "separateMajorMinor": true,
+  "separateMinorPatch": false,
+  "packageRules": [
+    {
+      "description": "Elixir dependencies",
+      "matchManagers": ["mix"],
+      "matchUpdateTypes": ["major", "minor", "patch"],
+      "groupName": null,
+      "commitMessagePrefix": "chore(deps):"
+    },
+    {
+      "description": "Docker dependencies",
+      "matchManagers": ["dockerfile"],
+      "matchUpdateTypes": ["major", "minor", "patch"],
+      "groupName": null,
+      "commitMessagePrefix": "chore(deps):"
+    },
+    {
+      "description": "GitHub Actions",
+      "matchManagers": ["github-actions"],
+      "matchUpdateTypes": ["major", "minor", "patch"],
+      "groupName": null,
+      "commitMessagePrefix": "chore(deps):"
+    }
+  ]
+}