Not Transformed automatically for other parent class except BaseModel

[BhuwanPandey]

Hy
I am using filter package fastapi-filter and when I try to migrate pydantic v1 to v2 using bump_pydantic it doesnot auto transformed.

here, the code
filters.py

from fastapi_filter.contrib.sqlalchemy import Filter

class CommentFilter(Filter):
    content_id: Optional[UUID]
    creator_id: Optional[UUID]

    class Constants(Filter.Constants):
        model = Content

when i run
python -m bum p_pydantic filters.py

It not transformed to

class CommentFilter(Filter):
    content_id: Optional[UUID] = None
    creator_id: Optional[UUID] = None

    class Constants(Filter.Constants):
        model = Content
        ```