Update react-test-renderer from 16.5.2 to 16.6.0 in /

Author: dependencies-bot

package-lock.json

@@ -109,7 +109,7 @@
     "octicons": "^8.1.0",
     "react": "16.6.0",
     "react-dom": "16.6.0",
-    "react-test-renderer": "16.5.2",
+    "react-test-renderer": "16.6.0",
     "recompose": "^0.29.0",
     "sinon": "5.0.0",
     "sinon-chai": "3.1.0",