(auto)Bump diffusers version pin

[StrongerXi]

Right now it's ~1 year behind:

benchmark/torchbenchmark/util/framework/diffusers/requirements.txt

Line 1 in f0b2a09

diffusers==0.30.3

Bumping it would induce breakages like example inputs dimensions in #2654, and maybe more for the old stable diffusion models.

Maybe we can auto update this like pytorch/pytorch#160635?

cc @BoyuanFeng, @huydhn

[huydhn]

This makes sense. I would be able to pick this up next week if there is no owner by that time.