fix(package): update react-scripts to version 3.3.1

Closes #9

Author: greenkeeper[bot]

package.json

@@ -5,7 +5,7 @@
   "dependencies": {
     "react": "^16.5.0",
     "react-dom": "^16.5.0",
-    "react-scripts": "3.1.0",
+    "react-scripts": "3.3.1",
     "recompose": "^0.30.0",
     "styled-components": "^4.0.2"
   },