fix(package): update react to version 16.13.1

Closes #7

Author: greenkeeper[bot]

package.json

@@ -11,7 +11,7 @@
   "dependencies": {
     "isomorphic-unfetch": "2.0.0",
     "next": "4.2.1",
-    "react": "16.2.0",
+    "react": "16.13.1",
     "react-bootstrap": "0.31.5",
     "react-dom": "16.2.0",
     "react-infinite-scroller": "1.1.2",