Merge pull request #27 from edx/greenkeeper/babel-jest-21.0.0

Update babel-jest to the latest version 🚀

package.json

@@ -30,7 +30,7 @@
     "@storybook/react": "3.2.8",
     "@storybook/storybook-deployer": "^2.0.0",
     "babel-cli": "^6.24.1",
-    "babel-jest": "^20.0.3",
+    "babel-jest": "^21.0.0",
     "babel-loader": "^7.0.0",
     "babel-plugin-transform-object-rest-spread": "^6.23.0",
     "babel-preset-babili": "^0.1.4",