Scribus 188.8.131.52 is in the VL repository under /extra. You may have to add that directory to your /etc/slapt-get/slapt-getrc file. As root add this line:
Then run gslapt, search for Scribus, and have gslapt install it.
Scribus 184.108.40.206 is not the latest version. The latest stable version is 220.127.116.11, which is not in our repositories. You can download a package for 18.104.22.168 from linuxpackages.net, but I don't know how it handles dependencies. Or you can compile 22.214.171.124 from source code.