ci: Add workflow to auto-refresh packages

.github/workflows/update.yml

@@ -0,0 +1,21 @@
+# SPDX-FileCopyrightText: 2023 Klarälvdalens Datakonsult AB, a KDAB Group company <[email protected]>
+#
+# SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only
+
+name: nightly update
+
+on:
+  schedule:
+    - cron: "0 3 * * *"
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+
+      - name: Update
+        run: ./update_all.py

update_all.py

@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: MIT
+#
+# Script called by CI to update any outdated package
+
+from utils import *
+
+outdated_packages = get_outdated_packages()
+
+for package in outdated_packages:
+    filename = package[0]
+    new_tag = package[2]
+    if not run_command(f"./update_one.py {filename} {new_tag} --pr KDAB/homebrew-tap"):
+        exit_because("Failed to run update_one.py")
+
+exit(0)