chore(package): update react-test-renderer to version 16.5.0

Closes #95

Author: greenkeeper[bot]

package.json

@@ -18,7 +18,7 @@
     "react": "^16.5.0",
     "react-dom": "^16.5.0",
     "react-scripts": "^1.0.7",
-    "react-test-renderer": "^15.5.4"
+    "react-test-renderer": "^16.5.0"
   },
   "peerDependencies": {
     "d3-array": "^1.2.0",