[PR] Fix CircleCI macos build
[PR] Fix CircleCI macos build

Summary:
Per Homebrew/brew#5513, this will hopefully work around a bug in the
homebrew auto-updater until a fix is merged and released.
Pull Request resolved: https://github.com/facebook/flow/pull/7334

Reviewed By: gabelevi

Differential Revision: D13616897

Pulled By: samwgoldman

fbshipit-source-id: f2458e16ddb9533b9f127c34df7013b085e43b68

popham/flow,samwgoldman/flow,mroch/flow,gabelevi/flow,popham/flow,mroch/flow,facebook/flow,facebook/flow,popham/flow,samwgoldman/flow,mroch/flow,gabelevi/flow,popham/flow,mroch/flow,AgentME/flow,mroch/flow,gabelevi/flow,AgentME/flow,facebook/flow,AgentME/flow,gabelevi/flow,gabelevi/flow,AgentME/flow,facebook/flow,mroch/flow,facebook/flow,samwgoldman/flow,popham/flow,samwgoldman/flow,popham/flow,facebook/flow,AgentME/flow,samwgoldman/flow,mroch/flow,popham/flow,gabelevi/flow,gabelevi/flow,samwgoldman/flow,samwgoldman/flow,facebook/flow