DX: Upgrade to `uv`

[stephenlf]

Confirm this is a feature request for the Python library and not the underlying OpenAI API.

• This is a feature request for the Python library

Describe the feature or improvement you're requesting

Upgrade to uv instead of rye

According to the docs

Rye is no longer developed. We encourage all users to use uv, the successor project from the same maintainers, which is actively maintained and much more widely used.

For current Rye users, please see the uv migration guide. While Rye will continue to be available, no further updates are planned, including security updates.

Additional context

No response