Add mermaid back in package.json

.github/workflows/build.yml

@@ -36,6 +36,13 @@ jobs:
           push_options: "--dry-run"
           file_pattern: "assets/lib/katex/*"
           commit_message: "📦 Update packaged KaTeX"
+      - name: Commit Mermaid changes
+        uses: stefanzweifel/git-auto-commit-action@v5
+        with:
+          branch: "${{ github.head_ref }}"
+          push_options: "--dry-run"
+          file_pattern: "assets/lib/mermaid/*"
+          commit_message: "📦 Update packaged Mermaid"
       - run: npm run build
       - name: Commit CSS changes
         uses: stefanzweifel/git-auto-commit-action@v5