fix: 锁定@types/node版本为20.x以兼容TypeScript 4.x，避免cnpm安装不兼容的v26版本导致TS1139编译错误

package.json

@@ -11,6 +11,7 @@
     "@testing-library/jest-dom": "^4.2.4",
     "@testing-library/react": "^9.3.2",
     "@testing-library/user-event": "^7.1.2",
+    "@types/node": "^20.0.0",
     "@types/react": "^16.9.46",
     "@types/react-dom": "^16.9.8",
     "@types/react-router-dom": "^5.1.5",