Update charles-beta to 4.2b7 (#4528)
Update charles-beta to 4.2b7 (#4528)


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