UserWarning: Field name "json" in "RequestInfo" shadows an attribute in parent "BaseModel"

on Python 3.14 with Pydantic 2.12.5
shows warning in `.venv-3.14/Lib/site-packages/pydantic_client/schema.py`
```
C:\Users\mark\PycharmProjects\a\.venv-3.14\Lib\site-packages\pydantic_client\schema.py:5: UserWarning: Field name "json" in "RequestInfo" shadows an attribute in parent "BaseModel"
  class RequestInfo(BaseModel):
```