Use node 16 on CI

Author: maxbrunsfeld

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
         with:
-          node-version: 14
+          node-version: 16
       - run: npm install
       - run: npm test
   test_windows:
@@ -26,6 +26,6 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
         with:
-          node-version: 14
+          node-version: 16
       - run: npm install
       - run: npm run-script test-windows