Increase the drop rates on hippogryph skins and snurble tufts

[RichardButte]

These two items are absolutely vital for the leatherworking and weaving professions at endgame, yet their drop rates are nothing short of abysmal.

As a result, I see plenty of grinding bots positioned to kill these mobs, often standing there autotargeting and killing these for the entire day.

I don't see this with fleece, however, which is just as vital to weaving but doesn't suffer from having an immensely poor drop rate, as each karakul can drop up to 9 baskets of fleece and drops them quite regularly.

Since its clear that SE has no intention of actually getting rid of these bots (as I see the same bots all the time, despite reporting them repeatedly, doing things like running into walls for minutes at a time), the next best thing would be to remove the motivation to bot in the first place by increasing the drop rates.

PS. I posted this here because this is very much an economy issue...