Apply ruff/flake8-pyi preview rule PYI059 (zarr-developers#3154)

PYI059 `Generic[]` should always be the last base class

Author: DimitriPapadopoulos

src/zarr/core/dtype/wrapper.py

@@ -57,7 +57,7 @@
 
 
 @dataclass(frozen=True, kw_only=True, slots=True)
-class ZDType(Generic[TDType_co, TScalar_co], ABC):
+class ZDType(ABC, Generic[TDType_co, TScalar_co]):
     """
     Abstract base class for wrapping native array data types, e.g. numpy dtypes