Update testing patches to apply cleanly to structure.sql
We apply a series of testing patches to gitlab in order to exercise features of the database testing pipeline, and two of these patches apply changes to db/structure.sql, which has changed enough that the patches failed to apply cleanly.
This fixes those patches:
docker/gitlab/patches/testing/Drop-table-in-post-migration.patchdocker/gitlab/patches/testing/New-Table-Migration.patch