Bug 18729: Add PUT /holds/{hold_id}/pickup_location

Bug 18729: Add PUT /holds/{hold_id}/pickup_location

This patch adds a route to overwrite the current pickup location.

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit bf2c59a182837ec397c850ac6e22d52c0ec8d045)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit 1786089ab88ef3a8612aa114dbab574934fbaf3c)

Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>