feat!: drop node 16

Author: sxzz

package.json

@@ -116,7 +116,7 @@
     "vue": "^3.5.13"
   },
   "engines": {
-    "node": ">=16.14.0"
+    "node": ">=18.12.0"
   },
   "prettier": "@sxzz/prettier-config",
   "resolutions": {

tsup.config.ts

@@ -3,7 +3,7 @@ import { defineConfig } from 'tsup'
 export default defineConfig({
   entry: ['./src/*.ts'],
   format: ['cjs', 'esm'],
-  target: 'node16.14',
+  target: 'node18.12',
   splitting: true,
   cjsInterop: true,
   clean: true,