l10n: Serbian translation updated
l10n: Serbian translation updated

Currently translated at 100.0% (471 of 471 strings)

Co-authored-by: Мирослав Николић <8b591ab32019a49d8523290218e6bc8202e46718@rocketmail.com>

ximion/appstream,ximion/appstream,ximion/appstream,ximion/appstream