[#2036] specify Node version in test workflow

Author: catarak

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
     - name: Use Node.js
       uses: actions/setup-node@v1
       with:
-        node-version: '16.x'
+        node-version: '16.14.x'
     - run: npm install
     - run: npm run test
     - run: npm run lint