use node 18 as default for github ci

Author: ardentia

.github/workflows/main.yml

@@ -29,7 +29,7 @@ jobs:
       - name: Install node.js
         uses: actions/setup-node@v2
         with:
-          node-version: '14'
+          node-version: '18'
           check-latest: true
 
       - name: Install dependencies