update telegram-alpha to 5.6-177707,2210 (#7675)
update telegram-alpha to 5.6-177707,2210 (#7675)


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