chore(package): update react-test-renderer to version 16.4.2

Author: greenkeeper[bot]

package.json

@@ -94,7 +94,7 @@
     "pkg-dir": "^3.0.0",
     "prettier": "^1.12.1",
     "react": "16.4.2",
-    "react-test-renderer": "16.4.1",
+    "react-test-renderer": "16.4.2",
     "reflect-metadata": "^0.1.12",
     "rimraf": "^2.6.2",
     "ts-jest": "23.0.0",