[FIX] delivery: assure stock user can validate pickings

Steps to reproduce:

- Delivery module is installed.
- User_1 is stock_manager and sale_manager.
- User_1 creates sale_order with set carrier_id and confirms it
  (Automatically is created a picking P).
- User_2 is stock user/manager but in sale is "Own documents only".
- User_2 open picking P and validates it.
  => Error: cannot validate due to access rules.

closes odoo#92870

Signed-off-by: Arnold Moyaux (arm) <[email protected]>

Author: MiquelRForgeFlow

addons/delivery/models/stock_picking.py

@@ -125,7 +125,7 @@ def _send_confirmation_email(self):
         for pick in self:
             if pick.carrier_id:
                 if pick.carrier_id.integration_level == 'rate_and_ship' and pick.picking_type_code != 'incoming':
-                    pick.send_to_shipper()
+                    pick.sudo().send_to_shipper()
             pick._check_carrier_details_compliance()
         return super(StockPicking, self)._send_confirmation_email()