👷 Add workflow to build theme

.github/workflows/build-theme.yml

@@ -0,0 +1,30 @@
+name: Build Theme
+
+on:
+  pull_request_target:
+    types: [opened, edited]
+    branches:
+      - "dependabot/*"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    if: github.actor == 'dependabot[bot]' || github.event.sender.login == 'dependabot[bot]'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Install dependencies and Build Theme
+        uses: actions/setup-node@v3
+      - run: npm install
+      - run: npm run build
+      - name: Commit and push CSS changes
+        uses: devops-infra/action-commit-push@master
+        with:
+          github_token: "${{ secrets.GITHUB_TOKEN }}"
+          commit_message: "💄 Rebuild CSS"
+      - run: npm run assets
+      - name: Commit and push vendor changes
+        uses: devops-infra/action-commit-push@master
+        with:
+          github_token: "${{ secrets.GITHUB_TOKEN }}"
+          commit_message: "📦 Update packaged assets"