Updated polish translation

[Jürgen Spitzmüller]

Am Sonntag, dem 04.08.2024 um 08:03 +0200 schrieb Jürgen Spitzmüller:
> * You have omitted many accelerators in your translation. Is this
> intentional? Polish users won't be able to access those elements via
> keyboard shortcuts then.

Also I think that strings which end with colon in English (e.g.,
"Encoding:") should probably also end with colon in Polish, no?

-- 
Jürgen