node 14

Author: toyobayashi

.github/workflows/main.yml

@@ -15,7 +15,7 @@ jobs:
     - uses: actions/checkout@v2
     - uses: actions/setup-node@v2
       with:
-        node-version: '12.x'
+        node-version: '14.x'
         registry-url: 'https://registry.npmjs.org'
 
     - name: Get npm cache directory