AC-1156: Move custom eslint tests to magento-coding-standard repo

- Use node 16 in php.yml

Author: loginesta

.github/workflows/php.yml

@@ -28,7 +28,7 @@ jobs:
     - name: Setup node
       uses: actions/setup-node@v2
       with:
-        node-version: '14'
+        node-version: '16'
 
     - uses: actions/checkout@v2