Pontoon: Update Ukrainian (uk) localization of AMO Frontend
Pontoon: Update Ukrainian (uk) localization of AMO Frontend

Localization authors:
- Artem Polivanchuk <artem@mozilla.org.ua>

kumar303/addons-frontend,kumar303/addons-frontend,mozilla/addons-frontend,mozilla/addons-frontend,mozilla/addons-frontend,kumar303/addons-frontend,kumar303/addons-frontend,mozilla/addons-frontend