Bump jest-cli from 24.5.0 to 24.6.0

Bumps [jest-cli](https://github.com/facebook/jest/tree/HEAD/packages/jest-cli) from 24.5.0 to 24.6.0.
- [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/v24.6.0/packages/jest-cli)

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