update pydantic V1 to V2

[mohammadhasananisi]

Hello, thank you for the libraries you made.
I wish both version 1 and version 2 could be supported

This pull request includes updates to the pydantic_sqlalchemy library to support the new version of Pydantic and some dependency updates in the project configuration. The key changes involve modifications to the configuration class and the creation of Pydantic models from SQLAlchemy models.

Updates to support Pydantic v2:

• pydantic_sqlalchemy/main.py: Replaced BaseConfig with ConfigDict for Pydantic configuration and updated the OrmConfig class to use the new configuration format. ([pydantic_sqlalchemy/main.pyL3-R10](https://github.com/tiangolo/pydantic-sqlalchemy/pull/129/files#diff-e4f4ae85f18db30c044c31032df2f460a3e47f9fc07f50a7d731132fec871b58L3-R10))
• pydantic_sqlalchemy/main.py: Updated the sqlalchemy_to_pydantic function to use the new model_config attribute from the updated OrmConfig class. ([pydantic_sqlalchemy/main.pyL36-R37](https://github.com/tiangolo/pydantic-sqlalchemy/pull/129/files#diff-e4f4ae85f18db30c044c31032df2f460a3e47f9fc07f50a7d731132fec871b58L36-R37))

Dependency updates:

• pyproject.toml: Updated the Pydantic dependency to version >=2.0.0,<2.9.2. ([pyproject.tomlL17-R17](https://github.com/tiangolo/pydantic-sqlalchemy/pull/129/files#diff-50c86b7ed8ac2cf95bd48334961bf0530cdc77b5a56f852c5c61b89d735fd711L17-R17))