Mostly for completeness, but I believe there are cases to use that in
multicolumn GIN indexes.

Bump btree_gin module version

Author: Matheus Oliveira
Reviewed by: Tomas Vondra
Discussion: https://www.postgresql.org/message-id/flat/CAJghg4LMJf6Z13fnZD-MBNiGxzd0cA2=F3TDjNkX3eQH58hktQ@mail.gmail.com