Polish translations for wet and dry season labels and `doSeasonCycle` gamerule.

[asghcfd]

Hello, I noticed some missing Polish translations and decided to add them. I’ve added translations for the following:

• gamerule.doSeasonCycle
• desc.sereneseasons.early_wet
• desc.sereneseasons.mid_wet
• desc.sereneseasons.late_wet
• desc.sereneseasons.early_dry
• desc.sereneseasons.mid_dry
• desc.sereneseasons.late_dry

I tested the resulting translation file as a resource pack.

Thank you for creating this mod.