Post-deploy migration to delete migrate_memberships
This merge request is Step 2 of deleting the migrate_memberships column that was added to Bulk Import Configurations. It follows the process outlined for dropping columns in a migration by adding a post-deploy migration.
The migrate_memberships column was ignored in a previous MR. The current MR drops the m_m column following the process outlined in our docs.
Please note:
Any change that introduces a database migration, whether it’s regular, post, or data migration, must have a changelog entry, even if it is behind a disabled feature flag.