Update extension.yml

Author: fiahfy

.github/workflows/extension.yml

@@ -11,7 +11,9 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
+        with:
+          node-version: '14'
       - run: yarn
       - run: yarn test
       - run: yarn package