✨ Add package updater action for Dockerfile

.github/workflows/addon-update-packages.yaml

@@ -0,0 +1,34 @@
+name: Run Package updates
+
+# yamllint disable-line rule:truthy
+on:
+  schedule:
+    - cron: "0 0 * * FRI"
+  workflow_dispatch:
+
+jobs:
+  check-for-updates:
+    name: Check for updates
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+    steps:
+      - name: ↩️ Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: 🔧 Set git bot user
+        shell: bash
+        run: |
+          git config user.name github-actions
+          git config user.email [email protected]
+
+      - name: 🚀 Run Updater
+        uses: Poeschl/container-package-updater@v3
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          containerFile: syncthing/Dockerfile
+          osVersion: 3.20
+          architectures: "x86_64, aarch64, armhf, armv7, x86"