Bump jest-config from 21.2.1 to 22.4.3

Bumps [jest-config](https://github.com/facebook/jest) from 21.2.1 to 22.4.3.
- [Release notes](https://github.com/facebook/jest/releases)
- [Changelog](https://github.com/facebook/jest/blob/master/CHANGELOG.md)
- [Commits](https://github.com/facebook/jest/commits)

Signed-off-by: dependabot[bot] <support@dependabot.com>

package.json

@@ -33,7 +33,7 @@
     "chalk": "^2.3.0",
     "chrome-remote-interface": "^0.25.4",
     "fs-extra": "^5.0.0",
-    "jest-config": "^21.2.1",
+    "jest-config": "^22.4.3",
     "jest-environment-node": "^21.2.1",
     "jest-runtime": "^21.2.1",
     "lodash": "^4.17.4",