i18n: translation updates from weblate

Co-authored-by: Aleksandar Anžel <44969003+AAnzel@users.noreply.github.com>
Co-authored-by: Hosted Weblate <hosted@weblate.org>
Co-authored-by: sicKat <giuseppecatillo2003@gmail.com>
Translate-URL: https://hosted.weblate.org/projects/pop-os/libcosmic/it/
Translate-URL: https://hosted.weblate.org/projects/pop-os/libcosmic/sr_Cyrl/
Translation: Pop OS/libcosmic

i18n/it/libcosmic.ftl

@@ -0,0 +1,8 @@
+close = Chiudi
+license = Licenza
+links = Link
+developers = Sviluppatori
+designers = Designer
+artists = Artisti
+translators = Traduttori
+documenters = Documentatori

i18n/sr-Cyrl/libcosmic.ftl

@@ -3,3 +3,8 @@ close = Затвори
 # About
 license = Лиценца
 links = Линкови
+developers = Програмер
+designers = Дизајнери
+artists = Уметници
+translators = Преводиоци
+documenters = Произвођачи документације