V2.1 for MC 1.21.6-1.21.11

Changelog for version 2.1:

- Fixed some advancements not working at all or having broken criterias
- Fixed one config menu option not working 
- Fixed drowneds not working because of a typo in storages
- Fixed multiple mobs not being able to drop level shatter shards
- Bogged balance change - infested duration cut in half at all levels