ci: use node 20.x

.github/workflows/ci.yml

@@ -3,7 +3,7 @@ name: ci
 on:
   push:
     branches: main
-    paths-ignore:
+    # paths-ignore:
       # - '**/*.md'
       # - 'examples/**/*.html'
 
@@ -23,7 +23,7 @@ jobs:
       - name: setup node.js
         uses: actions/setup-node@v3
         with:
-          node-version: 16.x
+          node-version: 20.x
 
       - name: load cache
         uses: actions/cache@v3