infrastructure-pydantic-deprecation-pydanticdeprecatedsince20-warning-about-class-base-2dc112be

THEN Replace class-based config with `ConfigDict` in pydantic models (e.g., `UserAPIKeyAuth`). Import `ConfigDict` from `pydantic` and add `model_config = ConfigDict(...)` instead of `class Config:`. This resolves the deprecation warning and ensures compatibility with Pydantic V3.

# Before
class UserAPIKeyAuth(BaseModel):
    class Config:
        from_attributes = True

# After
from pydantic import ConfigDict

class UserAPIKeyAuth(BaseModel):
    model_config = ConfigDict(from_attributes=True)