Nightly testing of integration points (Azure)

[Racer159]

Describe what should be investigated or refactored

Zarf integrates with many external services and each of these has its unique *ilities that are likely to change over time. We should be checking against the following:

• A wide range of kubernetes cluster versions and distros
• A wide range of git repositories (for flux deployments)
• A wide range of image registries (for deployments and zarf package publishing/deploying)

Links to any relevant code

https://github.com/defenseunicorns/zarf/tree/main/.github/workflows

Additional context

This is the Azure version of this issue and focuses on AKS and ACR for deployment and ACR for package publish (see #1407)

[Noxsios]

Since GHCR is hosted on Azure (pretty sure), Github/GHCR tests should also happen in this PR.

First one to test: #1677, pulling unauthenticated from GHCR

[schristoff-du]

At this time, we aren't seeing enough issues with Azure to commit to creating & maintaining an Azure E2E test.