chore: update ci

Author: antfu

.github/workflows/ci.yml

@@ -36,7 +36,7 @@ jobs:
 
     strategy:
       matrix:
-        node: [14.x, 16.x]
+        node: [16.x, 18.x]
         os: [ubuntu-latest, windows-latest, macos-latest]
       fail-fast: false