fix(package): update react-scripts to version 3.4.1

Closes #12

Author: greenkeeper[bot]

package.json

@@ -12,7 +12,7 @@
     "react-apollo": "^2.2.4",
     "react-dom": "^16.6.0",
     "react-redux": "^6.0.0",
-    "react-scripts": "3.1.0",
+    "react-scripts": "3.4.1",
     "redux": "^4.0.1"
   },
   "scripts": {