Update scribus-dev from 1.5.6.1 to 1.5.7 (#10824)
Update scribus-dev from 1.5.6.1 to 1.5.7 (#10824)

* Update scribus-dev from 1.5.6.1 to 1.5.7

* Update scribus-dev: add desc and remove appcast
pkq/homebrew-versions,mahori/homebrew-cask-versions,pkq/homebrew-versions,404NetworkError/homebrew-versions,404NetworkError/homebrew-versions