ruff

0bf7683a - Avoid `mutable-class-default` violations for Pydantic subclasses (#9187)

Avoid `mutable-class-default` violations for Pydantic subclasses (#9187) Only applies to subclasses defined within the same file, as elsewhere. See: https://github.com/astral-sh/ruff/issues/5243#issuecomment-1860776975.