Changes to Update User Notifications

added the new most_recent_tes_update enum value to the notifications/to_render/propertyNames response property for the response status 200

added the new most_recent_tes_update enum value to the request property key

added the new required request property key

removed the required property notifications/most_recent_app_update from the response with the 200 status

removed the request property date_acknowledged

removed the request property name

added the required property notifications/to_render to the response with the 200 status

endpoint added