migrations failing in master

Migrations with the latest image are failing with:

psql:/srv/gitlab/db/structure.sql:5: ERROR:  permission denied to create extension "btree_gist"           │
│ migrations HINT:  Must be superuser to create this extension.                                                        │
│ migrations rake aborted!                                                                                             │
│ migrations failed to execute:                                                                                        │
│ migrations psql -v ON_ERROR_STOP=1 -q -X -f /srv/gitlab/db/structure.sql gitlabhq_production

This is due to the required addition of btree_gist in gitlab-org/gitlab!32335 (merged)