Update Fleet-maintained apps and policies

[marko-lisica]

Gong snippet: prospect-hubble: https://us-65885.app.gong.io/call?id=4210985230183928646&highlights=%5B%7B%22type%22%3A%22SHARE%22%2C%22from%22%3A567%2C%22to%22%3A587%7D%5D

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Goal

User story
As an IT admin,
I want to fetch the latest version of the Fleet-maintained app in the Fleet UI and API
so that I can add the newest app version without having to delete the app and add it again.

Objective

Mission critical app management

Original requests

#22616

Context

• Product designer: _________________________

Changes

Product

• UI changes: TODO
• CLI (fleetctl) usage changes: TODO
• YAML changes: TODO
• REST API changes: TODO
• Fleet's agent (fleetd) changes: TODO
• Activity changes: TODO
• Permissions changes: TODO
• Changes to paid features or tiers: TODO
• Other reference documentation changes: TODO
• Once shipped, requester has been notified

Engineering

• Feature guide changes: TODO
• Database schema migrations: TODO
• Load testing: TODO

ℹ️  Please read this issue carefully and understand it. Pay special attention to UI wireframes, especially "dev notes".

QA

Risk assessment

• Requires load testing: TODO
• Risk level: Low / High TODO
• Risk description: TODO

Manual testing steps

1. Step 1
2. Step 2
3. Step 3

Testing notes

Confirmation

1. Engineer (@____): Added comment to user story confirming successful completion of QA.
2. QA (@____): Added comment to user story confirming successful completion of QA.

[noahtalerman]

@Patagonia121 I see you added mozartia to this user story. Can you please file a customer request for them w/ Gong snippet? We want the customer request w/ the customer's own words so that we can understand whether the work done in this user story addresses their needs.

This is something we (Fleet) decided to prioritize for MDM maturity. W/o the customer request we don't know if what we're working on solves their problem.