erp5_curation_request_test: Update Url portal roles

bt5/erp5_curation_request_test/PortalTypeRolesTemplateItem/Url.xml

 <type_roles>
   <role id='Assignor; Assignee; Associate; Auditor; Author'>
    <property id='title'>Default</property>
+   <property id='condition'>python: context.getPortalObject().portal_membership.getAuthenticatedMember() == context.Base_getOwnerId()</property>
    <multi_property id='category'>group/my_group</multi_property>
   </role>
 </type_roles>
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