Update sketch-beta to 51.2.0,57516 (#6006)
Update sketch-beta to 51.2.0,57516 (#6006)


caskroom/homebrew-versions,caskroom/homebrew-versions,mahori/homebrew-versions,lantrix/homebrew-versions,pkq/homebrew-versions,mahori/homebrew-cask-versions,Ngrd/homebrew-versions,lantrix/homebrew-versions,rogeriopradoj/homebrew-versions,404NetworkError/homebrew-versions,rogeriopradoj/homebrew-versions,pkq/homebrew-versions,Ngrd/homebrew-versions,victorpopkov/homebrew-versions,404NetworkError/homebrew-versions,victorpopkov/homebrew-versions