This patch updates the existing Koha::Account::Line->patron accessor to
use the new aliased 'patron' relation in the schema class
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>