Seeder timeouts

What does this MR do?

gitlab-development-kit!1565 (merged) introduced a query statement_timeout for Postgres in development environment. Now this causes issues with seeding the database in MASS_INSERT=1 mode, since those queries take a long time to complete.

The quick fix here is to disable the statement timeout for the seeding process.

See #258582 (closed).

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content