FIX BED-8688: Make Policy model validation requirements less strict

[d3vzer0]

Added several (Policy) model changes to fix/prevent issues for the following:

• retry_event: Model validation fails when the retry_event field contains a value not defined in the Retry enum. This change removes the Enum and accepts any (string) value.
• user_groups: It seems that the JAMF API can return user_groups in different formats. Added a secondary format to accept both a list containing a key/value dict or a list containing simple strings.
• Various model changes: Modified several models to not interpret field values as type Any but force the value to be read (and stored) as a string. This does not fix an existing issue, but may prevent future issues where the API response may return multiple types for the same field, which may cause the pipeline to fail.

[Copilot]

Pull request overview

This PR updates the Jamf Policy Pydantic models to be more tolerant of Jamf API response shape/typing variability, preventing validation failures in the collection pipeline.

Changes:

• Removes strict enums for trigger and retry_event, accepting any string value.
• Broadens model fields intended to handle inconsistent Jamf API formats (e.g., user group representations).
• Refactors several nested structures (e.g., self service categories, packages, dock items) into dedicated models / stricter annotations.

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[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 2 comments.