Merge pull request #1714 from StoDevX/greenkeeper/jest-21.2.1

Update jest to the latest version 🚀

Author: hawkrives

package.json

@@ -108,7 +108,7 @@
     "eslint-plugin-react": "7.4.0",
     "eslint-plugin-react-native": "3.1.0",
     "flow-bin": "0.45.0",
-    "jest": "21.2.0",
+    "jest": "21.2.1",
     "js-yaml": "3.10.0",
     "junk": "2.1.0",
     "marked": "0.3.6",