[修改]1. 修改包的最低版本

Author: AlianBlank

package.json

@@ -4,7 +4,7 @@
   "category": "Game Framework X",
   "description": "Game Frame X Network Component",
   "version": "2.0.1",
-  "unity": "2017.1",
+  "unity": "2019.4",
   "keywords": [
     "Game Framework X"
   ],