Updates a supplier

        :param supplier_id: the supplier id
        :param supplier_dict: dict
        :return: dict

def update_supplier(self, supplier_id, supplier_dict):
        """
        Updates a supplier

        :param supplier_id: the supplier id
        :param supplier_dict: dict
        :return: dict
        """
        return self._create_put_request(resource=SUPPLIERS, billomat_id=supplier_id, send_data=supplier_dict)