chore: use Node.js 16.x in CI (#198)

Author: rzhao271

.github/workflows/node-gyp.yml

@@ -26,7 +26,7 @@ jobs:
           path: node-gyp
       - uses: actions/setup-node@v3
         with:
-          node-version: 14.x
+          node-version: 16.x
       - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python }}