Update rstudio-preview from 1.2.1502 to 1.2.1511 (#7281)
Update rstudio-preview from 1.2.1502 to 1.2.1511 (#7281)


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