Added missing fields into resources.py files.

Author: dmytrotsko

src/datasources/resources.py

@@ -30,7 +30,7 @@ class Meta:
         model = SourceSubdivision
         fields: tuple[Literal['name'], Literal['display_name'], Literal['description'],
                       Literal['data_source'], Literal['reference_signal'], Literal['links'], Literal['external_name']]
-        fields = ('name', 'display_name', 'description', 'data_source', 'reference_signal', 'links')
+        fields = ('name', 'display_name', 'description', 'data_source', 'reference_signal', 'links', 'external_name')
         import_id_fields: list[str] = ['name']
         skip_unchanged = True