[World Generator] Winter Apocalypse++

Updated to Minecraft version 1.20 and 1.20.1

Added cherry grove biome

Sorry but as my studies go I doubt I'll be able to add difficulties to this version of the game

The first version I uploaded failed verification in-game when loading data packs because I accidentally used cherry grove biome settings from 1.20.2 and thus it wasn't backwards compatible. Now fixed it. Sorry about that.