fixes #860 -- try to fix mypy (#861)

Author: alex

tests/utils.py

@@ -80,7 +80,7 @@ def flip_byte(original: bytes, byte_offset: int) -> bytes:
 
 # Type safety: it's fine to use `...` here, but mypy config doesn't like it because it's
 # an explicit `Any`.
-def check_type_error(  # type: ignore[misc]
+def check_type_error(  # type: ignore[explicit-any]
     expected: str, f: Callable[..., object], *args: object
 ) -> None:
     with pytest.raises(TypeError) as e: