Feature: Support pydantic v2

[sudosubin]

Related Issues

• Fixes Support Pydantic v2 #38

Description

• Migrate pydantic v1 to v2
  • Updated pyproject.toml, poetry.lock
  • Updated deprecated functions/methods into v2 functions/methods (codegen, githubkit)
  • Actually I wanted to make githubkit support both pydantic v1 and v2, but it was too complex and required so many changes
• Added SetSchema, because List with unique_items was deprecated, and recommended to use Set
• Updated to use Annotated for pydantic models
  • I only checked Missing, but there is a need to check if the same applies to Union required.

[yanyongyu]

I'm not sure that set is a good way to replace the unique list since the set type does not contain order information. But i find an other way to impl this in the pydantic issue pydantic/pydantic-core#820 (comment). If we don't need to keep the order information, the set type is recommended.

[sudosubin]

Thank you for the feedback. I applied your comment :D

GitHub's OpenAPI does not yet have a schema with uniqueItems=True, but if one exists in the future, it will be safer to keep the order.

[yanyongyu]

Thanks foryour great help with this feature. I still need to investigate how to make it compatible with pydantic v1 and v2 after this pr is merged. The codegen part should be rewrited to support features including compatibility layer, lazy loading logic and api versioning. This may take a long time before release since i do not have too much free time.