chore(ci): bring back embargo test

[joshua-goldstein]

Description: While cleaning up TeamCity, we found an old test framework that still works and might be useful. We bring back this test. Remark: In this PR the job is configured to run only on a push to main and on a schedule, so it is not currently showing up in the jobs below. However, it is passing on CI. You can see a previous run e.g. here and here.