Replace Deprecated

Author: Behemyth

cppython/core/schema.py

@@ -91,7 +91,7 @@ def dynamic_data(cls, model: 'PEP621Configuration') -> 'PEP621Configuration':
         Returns:
             The data
         """
-        for field in model.model_fields:
+        for field in PEP621Configuration.model_fields:
             if field == 'dynamic':
                 continue
             value = getattr(model, field)