use updateProperty instead of edit

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@9714 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Banking/tests/TestERP5BankingMixin.py

@@ -568,7 +568,7 @@ class TestERP5BankingMixin:
     if not self.portal.hasProperty('reference_currency_id'):
       self.portal.manage_addProperty('reference_currency_id', 'EUR', type='string')
     else:
-      self.portal.edit(reference_currency_id="EUR")
+      self.portal._updateProperty('reference_currency_id', "EUR")
     # the person module
     self.person_module = self.getPersonModule()
     # the organisation module