fix(voyager): React update to make Voyager in admin UI work again

Author: klausi

assets/voyager/dist/bundle.min.js

@@ -1,7 +1,7 @@
 /*!
  * GraphQL Voyager - Represent any GraphQL API as an interactive graph
  * -------------------------------------------------------------
- *   Version: "1.0.0-rc.27"
+ *   Version: "1.0.0-rc.28"
  *   Repo: https://github.com/APIs-guru/graphql-voyager
  */
 @-webkit-keyframes voyager-shake {

assets/voyager/dist/voyager.css

@@ -8,8 +8,8 @@
   "dependencies": {
     "graphql": "^0.13.2",
     "graphql-voyager": "^1.0.0-rc.27",
-    "react": "^15.6.1",
-    "react-dom": "^15.6.1"
+    "react": "^16.3",
+    "react-dom": "^16.3"
   },
   "devDependencies": {
     "babel": "^6.23.0",