ruff

2fa50879 - Return a slice in `StmtClassDef#bases` (#6311)

Return a slice in `StmtClassDef#bases` (#6311) Slices are strictly more flexible, since you can always convert to an iterator, etc., but not the other way around. Suggested in https://github.com/astral-sh/ruff/pull/6259#discussion_r1282730994.