- Update pack to 1.21.5
  - All season biomes now have shifting dry foliage colors
  - Bushes can now be snowed in
- Fix issue causing snowed in plants popping off randomly (issue #31)
- Fix issue with snow in bare winter biomes never melting
- Added support for mob variants spawning
- Fix issue with map contours not working in season biomes
- Snow golems now melt in non-winter season biomes
