Fix introspection in rb-site upgrade.
Review Request #14901 — Created March 14, 2026 and updated — Latest diff uploaded
At some point, django changed the name of
get_key_columnsin the
DatabaseIntrospectionclass toget_primary_key_columns. We never
because we haven't had any failures during upgrades, but this affects
Django 4.2 as well.
Verified this change inside a CI upgrade tests container.