Leather rebalance

Almost no one uses leather armor simply because it's much easier to find 24 iron ingots than it is to find or hatch ~24 cows. If you knew how many cows you really need for a full leather set, even if it's layered, you'd be horrified at how much less than 24 is. I suggest that a full set of leather armor takes MAXIMUM 4 cows. To do this, 6 pieces of skin or 1 whole skin must fall out of the cow, which is then cut into 6 pieces of skin. In return, cow care can be made more difficult, making it so that the calves do not grow up without enough grass.