chore(deps): update dependency react-scripts to v2.1.2

Author: renovate-bot

package.json

@@ -12,7 +12,7 @@
   },
   "devDependencies": {
     "prettier": "1.15.3",
-    "react-scripts": "2.1.1"
+    "react-scripts": "2.1.2"
   },
   "dependencies": {
     "connected-react-router": "4.5.0",