i18n: Update Polish translation

Signed-off-by: Marcin Mikołajczak <me@m4sk.in>
2 jobs for master in 15 minutes and 7 seconds (queued for 4 seconds)
latest
Status Job ID Name Coverage
  Test
passed #746
run unit tests

00:07:48

 
  Build
passed #747
linux:amd64

00:07:18