Pytest run fails due to db query at import time

[IBA20]

The below code in conf.py queries database at import time:

def get_fixed_settings() -> Dict[str, bool]:
    """Return fixed settings."""
    is_postgresql = connection.vendor == 'postgresql'
    has_trigram_extension = False
    if is_postgresql:
        with connection.cursor() as cursor:
            cursor.execute("SELECT COUNT(*) FROM pg_available_extensions WHERE name='pg_trgm'")

For this reason pytest run fails with error:
RuntimeError: Database access not allowed, use the "django_db" mark, or the "db" or "transactional_db" fixtures to enable it.

Any ideas what to do with this?