Add manifest version bump CI

.github/workflows/bump-manifest-version.yml

@@ -0,0 +1,40 @@
+name: Bump Manifest Version
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+
+jobs:
+  bump-manifest-version:
+    if: ${{ github.actor != 'github-actions[bot]' && !contains(github.event.head_commit.message, '[skip ci]') }}
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Bump manifest version
+        run: node scripts/bump-manifest-version.mjs
+
+      - name: Commit version bump
+        run: |
+          if git diff --quiet -- manifest.json; then
+            echo "manifest.json version did not change."
+            exit 0
+          fi
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add manifest.json
+          git commit -m "chore: bump manifest version [skip ci]"
+          git push