fix(package): update react-router-dom to version 5.1.1

Closes #758

Author: greenkeeper[bot]

packages/admin-ui/package.json

@@ -41,7 +41,7 @@
     "react-redux": "^5.0.7",
     "react-redux-loading-bar": "^4.1.0",
     "react-router": "^4.3.1",
-    "react-router-dom": "^4.2.2",
+    "react-router-dom": "^5.1.1",
     "react-router-redux": "^5.0.0-alpha.9",
     "react-rte": "^0.16.1",
     "react-side-effect": "^1.1.5",