Add target_type to refine the query in spec
What does this MR do and why?
The AuditEvent is being queried only by the target_id and it is possible that the returned row isn't of type Dast::ProfileSchedule so I have added target_type to the query to make it more deterministic and in turn reduce the flakiness of the test.
This test caused a broken master recently: gitlab-org/quality/engineering-productivity/master-broken-incidents#8575 (comment 2125980899)
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