Update rstudio-preview from 1.3.1091 to 1.4.869 (#9688)
Update rstudio-preview from 1.3.1091 to 1.4.869 (#9688)




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