ci: remove node16

Author: zhiyuanzmj

.github/workflows/ci.yml

@@ -33,7 +33,7 @@ jobs:
 
     strategy:
       matrix:
-        node: [16.x, 18.x]
+        node: [18.x]
         os: [ubuntu-latest, windows-latest, macos-latest]
       fail-fast: false