Bump pydantic version from 1.10.13 to >= 1.9.0, < 3

[kmcleste]

Updating pydantic version from 1.10.13 to >= 1.9.0, < 3. The version was originally pinned due to a dependency on the OpenAI python library. OpenAI has since updated their version requirements for pydantic. See OpenAI docs for the version change: pyproject.toml.

Pydantic V1 is no longer supported, and suggests migration to V2 (Migration Guide).

[jvmncs]

bumping this! currently blocking our deployment of vllm, which has to integrate with other pydantic ecosystem packages

looks like you need to format the code @kmcleste to pass checks, yapf -r vllm tests should do the trick

[saattrupdan]

Bumping this as well, as we also need this to support Pydantic 2.x in our integrations.

[simon-mo]

Thank you for your contribution. I will close this in favor of #2531