Old Horse Model

V2.0.6 Added copper armor and updated for 1.21.9/1.21.10

Also changed the file name of the pack from OldHorseModel_1_21_V2_0_5 to OldHorseModel_V2_0_6 as mojangs version numbering has changed with the drop system adding 1.21 to the filename isnt very relevent any longer given that 1.21.6 and 1.21.9 included alot of very breaking changes to the game for mods that a couple years ago would have been called 1.22 / 1.23, removing this also makes the title a little more readable in game