feat: specify Node.js engine version in package.json

Author: weijunext

package.json

@@ -2,6 +2,9 @@
  "name": "next-forge",
  "version": "2.1.0",
  "packageManager": "pnpm@10.12.4",
+ "engines": {
+ "node": "20.x"
+ },
  "scripts": {
  "dev": "next dev",
  "build": "next build",