fix: test with invalid schema return status code

Author: emasab

tests/integration/schema_registry/test_api_client.py

@@ -176,9 +176,9 @@ def test_api_get_register_schema_invalid(kafka_cluster, load_file):
 
     with pytest.raises(SchemaRegistryError, match="Invalid schema") as e:
         sr.lookup_schema(subject, schema2)
-    # Not as documented but the caused by is correct.
-    assert e.value.http_status_code == 500
-    assert e.value.error_code == 500
+
+    assert e.value.http_status_code == 422
+    assert e.value.error_code == 42201
 
 
 def test_api_get_subjects(kafka_cluster, load_file):