Fix pydantic_model_creator not validates JSONField

[aub9999]

Description

Makes a pedantic model created by pydantic_model_creator to validate JSONField

Motivation and Context

https://github.com/tortoise/tortoise-orm/issues/1251#issue-1372065040

Checklist:

• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have added the changelog accordingly.
• [x] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.