aiven-db-migrate allows Privilege Escalation through use of psql during migration

aiven-db-migrate is an Aiven database migration tool. Prior to 1.0.7, there is a privilege escalation vulnerability that allows elevation to superuser inside PostgreSQL databases during a migration from an untrusted source server. The vulnerability stems from psql executing commands embedded in a dump from the source server. This vulnerability is fixed in 1.0.7.