Update sourcetree-beta.rb (#8537)
Update sourcetree-beta.rb (#8537)


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