Update to 2.3.1

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-webservice.

I've started a version update as instructed in #240.

I'm currently searching for new versions and will update this PR shortly if I find one! Thank you for waiting!

Fixes #240

[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[hmaarrfk]

Seems like quite a few bug fixes:
https://github.com/pytorch/pytorch/releases/tag/v2.3.1

[github-actions]

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