Add pnpm to build

Author: switz

.github/workflows/node.js.yml

@@ -21,11 +21,14 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+    - uses: pnpm/action-setup@v2
+      with:
+        version: 9
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node-version }}
         cache: 'pnpm'
-    - run: pnpm install
+    - run: pnpm install --frozen-lockfile
     - run: npm run bands
     - run: npm run build