Update @types/jest in group pkg to the latest version � (#964)
Update @types/jest in group pkg to the latest version � (#964)

Summary:
I think I accidentally pinned this before. That's not necessary.

Pull Request resolved: https://github.com/facebook/flipper/pull/964

Test Plan: yarn test

Reviewed By: mweststrate

Differential Revision: D20835725

Pulled By: passy

fbshipit-source-id: 627594d4f1a425cf0db410a097c82af6758d7d11

facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper