Fix File is Busy Error In Unit Test

[MarcusSorealheis]

It appears to only occur under Docker but it is so frequent that we do not need to link an example. It will happen to your PR :)

[blakehatch]

Seems like the best way to approach this would be to run tests that cause this issue (ex: "running_actions_manager_tests::entrypoint_cmd_does_invoke_if_set") in docker then with the frequency of failures noted attempt a large enough sample size on the fixed test where the bug isn't occurring.

If this is the right approach I can make an attempt at this bug, might also not be taking the surface area of affected tests properly into account.