Pontoon: Update Ukrainian (uk) localization of Thimble
Pontoon: Update Ukrainian (uk) localization of Thimble

Localization authors:
- Tymur Faradzhev <faradzhev.timur@gmail.com>

humphd/thimble.mozilla.org,mozilla/thimble.mozilla.org,humphd/thimble.mozilla.org,mozilla/thimble.mozilla.org,humphd/thimble.mozilla.org,humphd/thimble.mozilla.org,mozilla/thimble.mozilla.org,mozilla/thimble.mozilla.org