chore(ci): node v12 -> v14

Author: wangcch

.github/workflows/main.yml

@@ -21,7 +21,7 @@ jobs:
 
       - uses: actions/setup-node@v1
         with:
-          node-version: 12
+          node-version: 14
           registry-url: https://registry.npmjs.org/
 
       - name: Get yarn cache