Change new_device update json file to use python file rather than action #3933
Description
Checklist
- I have filled out the template to the best of my ability.
- This only contains 1 feature request (if you have multiple feature requests, open one feature request for each feature request).
- This issue is not a duplicate feature request of previous feature requests.
Is your feature request related to a problem? Please describe.
The new_device yaml has an action with a lot of python, this is error prone to maintain.
It also uses deprecated output for passing to subsequent steps.
Describe the solution you'd like
Move the python into a separate file for better syntax checking, same as json librarian.
Change to using environment variables rather than output and update subsequent steps to use these.
Describe alternatives you've considered
None
Additional context
None