Translations update from Hosted Weblate (#944)

* Added translation using Weblate (Polish)

* Translated using Weblate (Polish)

Currently translated at 100.0% (240 of 240 strings)

Translation: Magpie/UI
Translate-URL: https://hosted.weblate.org/projects/magpie/ui/pl/

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Co-authored-by: Krzysztof Marcinek <krzymar2002@gmail.com>