Update old datapack "Armored Pumpkins" to 1.21.8

Hello! I'm new to this server, but I'm passionate about datapacks but I'm very new to the truth. In this case, I have the Armored Pumpkins datapack that basically makes that when you throw a pumpkin and a helmet on an anvil, they merge, it is useful for example in servers where you rename a pumpkin to have a skin or model (CIT PACKS) and you want to have the enchantments and in turn the skin of the hat, in the datapack it also has a functionality that when you throw it in a Grindstone they separate. The bad thing about this datapack is that the latest version is 1.19 if I'm not mistaken, and I would like to upgrade to 1.21. 8 to use it on a server. If someone can help me I would appreciate it ❤️