Move workflow code into functions and write unit tests for them

[james-garriss]

💡 Summary

Write unit tests for all the code in the workflows.

Motivation and context

All code should be tested to prevent unknown problems from biting us unexpectedly (which has happened).

Implementation notes

Look through all the workflows.
Pull out any code.
Put them into functions in "utils/workflow".
Write Pester unit tests for them.
Verify that the workflows still work and that the unit tests pass.

Acceptance criteria

How do we know when this work is done?

• Workflow could is successfully unit tested.

[james-garriss]

TODO: I need to create individual issues for each workflow that needs to be modified and add them to this epic.