The pynvml package is deprecated

Thanks for publishing open source software. 

When running `sam-audio`, I noticed this deprecation warning:

```
FutureWarning: The pynvml package is deprecated. Please install nvidia-ml-py instead. If you did not install pynvml directly, please report this to the maintainers of the package that installed pynvml for you.
  import pynvml  # type: ignore[import]
```

