fix running all tests

tests/schemas/__init__.py

 import json
 import pkgutil
 from typing import Any
-from collections.abc import Generator
+from collections.abc import Iterator
 
 
@@ -5,6 +5,6 @@
 
 
-def get_schemas() -> Generator[Any]:
+def get_schemas() -> Iterator[Any]:
     for file_prefix in ("product",):
         data: bytes | None = pkgutil.get_data(__name__, f"{file_prefix}.schema.json")
         if data: