records: fix bibrec.additional_info upgrade script

* NOTE Amends upgrade script to add column `bibrec.additional_info` in
  case it does not exist.  (closes #2132)

Co-authored-by: Jiri Kuncar <jiri.kuncar@cern.ch>
Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>