Fix ty error on assignment to an undeclared Wrapper attribute

ty 0.0.64 takes the `value: str` annotation of `Wrapper.__setattr__` into
account, and so reports assigning 0 to an attribute as `invalid-assignment`
instead of `unresolved-attribute`. Update the suppression accordingly, which
also silences the resulting unused-ignore-comment warning.

Author: mvdbeek

bioblend/_tests/TestGalaxyObjects.py

@@ -178,7 +178,7 @@ def test_initialize(self):
         with pytest.raises(AttributeError):
             _ = self.w.foo  # type: ignore[attr-defined]  # ty: ignore[unresolved-attribute]
         with pytest.raises(AttributeError):
-            self.w.foo = 0  # type: ignore[assignment]  # ty: ignore[unresolved-attribute]
+            self.w.foo = 0  # type: ignore[assignment]  # ty: ignore[invalid-assignment]
 
     def test_taint(self):
         assert not self.w.is_modified