po: Translated using Weblate (Vietnamese)

Currently translated at 100.0% (103 of 103 strings)

Co-authored-by: Loc Huynh <huynhloc.contact@gmail.com>
Translate-URL: https://hosted.weblate.org/projects/seadve/kooha/vi/
Translation: FOSS Projects/Kooha

Author: weblate