Add Node.js and pnpm setup in GitHub Actions workflow for improved dependency management

.github/workflows/deploy.yml

@@ -21,6 +21,20 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: 'pnpm'
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 10.15.0
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3