Maintenance: Translations update from translations.zammad.org.

Special thanks to the amazing translation team. You rock! 💪

Co-authored-by: Dusan Vuckovic <[email protected]>
Co-authored-by: Ralf Schmid <[email protected]>
Co-authored-by: Weblate <[email protected]>
Translate-URL: https://translations.zammad.org/projects/documentations/admin-documentation-pre-release/
Translate-URL: https://translations.zammad.org/projects/documentations/admin-documentation-pre-release/de/
Translate-URL: https://translations.zammad.org/projects/documentations/admin-documentation-pre-release/sr/
Translation: Documentation/Admin Documentation (pre-release)

Author: 3 people