Attention test seems uncompatible with latest xformers

https://github.com/huggingface/diffusers/blob/764b62473ac10afd9c52e6b3f3f528f719bc7a34/src/diffusers/models/attention.py#L244

It seems that the latest xformers has the memory_efficient_attention function under xops.ops and not xops in this case.

xops.__version__
'0.0.32.post2'

Maybe "import xformers as xops" should be "import xformers.ops as xops" ?

For reference:
https://github.com/facebookresearch/xformers/blob/c159edc05ae5a0192ab0558e834b946155790371/xformers/ops/fmha/__init__.py#L186