Require deployment_completed task

What does this MR do and why?

Fixes:

2023-03-03 17:45:32.615133 F Rake::Task -- Task failed -- Exception: NameError: uninitialized constant ReleaseTools::Tasks::Metrics::TrackDeploymentCompleted

https://ops.gitlab.net/gitlab-org/release/tools/-/jobs/9406947

Author Check-list

• Has documentation been updated?