Bug 36160: Use $builder->build_object for patron objects in Circulation.t

Bug 36160: Use $builder->build_object for patron objects in Circulation.t

1) Set TrackLastPatronActivityTriggers to at least "Checking out an item"
2) Run tests in t/db_dependent/Circulation.t and verify that
   failes with "Invalid value passed, borrowers.updated_on..."
3) Apply patch
4) Run Circulatoint.t tests again and verify that no longer
   produces this error

Signed-off-by: Pedro Amorim <pedro.amorim@ptfs-europe.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>