[DTPK] 1.3.1.1 | Backpacks! 1.21.4

Just a very small update to fix some things that occurred only in this version.

(v1.3.1.1)
- Fixed:
  - Fixed the model_data field for the custom backpack command.
  - Partially fixed upgrading recipes model.

Note: As always, run `/reload` after updating datapacks for the changes to apply.

1.3.1.1-backpacks_dtpk-1.21.4.zip(193.57 KiB) Primary

1.3.1.1-backpacks_rscp-1.21.4.zip(1.14 MiB) Required resource pack

Backpacks!