fix(package): update mobx-react to version 6.1.3 (#568)

Author: greenkeeper[bot]

package.json

@@ -77,7 +77,7 @@
     "lru-cache": "^4.1.3",
     "mastani-codehighlight": "0.0.7",
     "mobx": "4.9.3",
-    "mobx-react": "6.1.2",
+    "mobx-react": "6.1.3",
     "mobx-react-lite": "^1.2.0",
     "mobx-state-tree": "3.10.1",
     "module-alias": "^2.0.1",