[minor issue] The BentoML image becomes too heavy after including the dependency on nvidia-ml-py3.

[KimSoungRyoul]

https://github.com/bentoml/BentoML/blob/cc765bba83501f446297de31fdc819cd7dcc2901/pyproject.toml#L40C23-L40C23

To be precise, build times have increased since the pynvml<12 dependency was added.

bento image size was increased more than 2~4GB (in my case (pytorch cpu))

given that most model serving is GPU-based anyway, adding a dependency makes sense.

but I think it can be more useful if exclude gpu extra option is added

like a bentoml[cpu-only]

or

# bentofile.yaml

docker:
   cuda_enable: false 
   # cuda_version: "11.6.2"