Updating yarn.lock dependencies
Updating yarn.lock dependencies

Summary:
Updating yarn.lock dependencies and making sure prettier version matches the one we use internally
Closes https://github.com/facebook/draft-js/pull/1617

Reviewed By: flarnie

Differential Revision: D6762796

Pulled By: flarnie

fbshipit-source-id: a373572cee66a1041f057aa71da1c32e4101246b

facebook/draft-js