chore: Update react-scripts in example

Author: amaury1093

packages/light.js/example-react/package.json

@@ -9,7 +9,7 @@
     "react": "^16.7.0",
     "react-dom": "^16.7.0",
     "react-router-dom": "^4.3.1",
-    "react-scripts": "2.1.3",
+    "react-scripts": "^3.3.0",
     "rxjs": "~6.2.2"
   },
   "scripts": {