[FIX] hr_holidays: fix leave responsible cleanup again

The method `_clean_leave_responsible_users` is also called from the
write method in hr.employee, however not anyone can remove users from
groups.

Fix of the fix in odoo/odoo#100591

closes odoo/odoo#100923

X-original-commit: 129e4799b04210f107185ba96b5c1845d943cf8b
Signed-off-by: Kevin Baptiste <kba@odoo.com>

addons/hr_holidays/models/hr_employee.py

@@ -217,7 +217,7 @@ class HrEmployeeBase(models.AbstractModel):
 
         res = super(HrEmployeeBase, self).write(values)
         # remove users from the Responsible group if they are no longer leave managers
-        old_managers._clean_leave_responsible_users()
+        old_managers.sudo()._clean_leave_responsible_users()
 
         if 'parent_id' in values or 'department_id' in values:
             today_date = fields.Datetime.now()