Update failing test

The `basic_metadata` fixture was missing the `schemaKey` attribute in
one of its `contributors`.

dandischema/tests/test_datacite.py

@@ -72,6 +72,7 @@ def metadata_basic() -> Dict[str, Any]:
  "name": "A_last, A_first",
  "email": "[email protected]",
  "roleName": [RoleType("dcite:ContactPerson")],
+ "schemaKey": "Person",
  }
  ],
  "license": [LicenseType("spdx:CC-BY-4.0")],