Replace manual npm update

.github/workflows/monthly_npm_dependency_update.yml

@@ -0,0 +1,50 @@
+name: Monthly npm dependency update and create PR
+
+on:
+  schedule:
+    - cron: "0 8 1 * *" # 08:00 UTC on the 1st of every month
+  workflow_dispatch:
+
+jobs:
+  npm-update:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+    defaults:
+      run:
+        working-directory: frontend
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd #v6
+        with:
+          persist-credentials: false
+
+      - name: Setup Node.js
+        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f #v6
+        with:
+          node-version: 24
+          cache: npm
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Update npm to support minimumReleaseAge
+        run: npm install -g [email protected]
+
+      - name: Update npm packages
+        run: npm update
+
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e #v7
+        with:
+          commit-message: "GHA: Monthly npm dependency update"
+          title: Monthly npm dependency update
+          body: |
+            - Monthly update of npm dependencies
+            - Only packages released more than 7 days ago are included (enforced via `min-release-age=7` in `.npmrc`)
+
+            Auto-generated by [create-pull-request][1]
+
+            [1]: https://github.com/peter-evans/create-pull-request
+          branch: monthly-npm-dependency-update
+          labels: automated-pr
+          delete-branch: true

frontend/.npmrc

@@ -0,0 +1 @@
+min-release-age=7