Updated Polish translation (#3335)

* i18n: updated Polish translation

Signed-off-by: Marcin Mikołajczak <m4sk1n@vivaldi.net>

* i18n: completed Polish translation

Signed-off-by: Marcin Mikołajczak <m4sk1n@vivaldi.net>

* i18n: corrected Polish translation

Signed-off-by: Marcin Mikołajczak <m4sk1n@vivaldi.net>

* i18n: Updated Polish translation

Signed-off-by: Marcin Mikołajczak <me@m4sk.in>

* Update simple_form.pl.yml

* Update simple_form.pl.yml

* updated Polish translation

Signed-off-by: Marcin Mikołajczak <me@m4sk.in>

* Update pl.yml