chore(package): update babel-preset-react-app to version 9.1.0

Closes #782

Author: greenkeeper[bot]

packages/admin-ui/package.json

@@ -59,7 +59,7 @@
     "babel-core": "^6.26.3",
     "babel-eslint": "10.0.1",
     "babel-preset-env": "^1.7.0",
-    "babel-preset-react-app": "^7.0.0",
+    "babel-preset-react-app": "^9.1.0",
     "babel-register": "^6.26.0",
     "babel-runtime": "^6.26.0",
     "chromedriver": "^2.45.0",