Finally on 1.21.4!

Aside from the version change, not much has happened, aside from some dependency updates and fixes to broken code.

The few big changes

• ⚠️ Fabric Loader has been updated to 0.16.9, and Fabric API 0.111.0 or later for 1.21.4 is now required.
• FarestsDataComponents.EXPLOSION_RESISTANT has been marked for removal and some custom Item.Settings methods have been deleted, as the vanilla DataComponentTypes.DAMAGE_RESISTANT has made that code obsolete.
• The license has been updated to LGPLv3.