Prepare AG environment for m4/m5 UAT

[katypies]

Issue description

We're closing in on completion of m4/m5! UAT will be conducted in AG. We need to prepare the environment in preparation for UAT.

Product plans to conduct UAT in Sprint 61.

Acceptance criteria

• Copy all data from staging onto AG
• reserve AG for UAT effort
• deploy latest Staging release to AG for UAT upon product request (use the last staging release tag)

Additional context

I'm assuming we'll use AG again. This can be updated for a different sandbox, too, if that's preferred for this UAT.

Note for copying data from Staging to Ag you should be able to follow what was done to clone staging to MS, this is the last PR were the deploy-staging workflow was targeting ms (not in this case you just want to target ag), you also should just do these commands by hand instead of trying to make a new workflow.

Links to other issues.

For further reference, this PR is the one when our workflow was switched to pull stable in staging. Please don't try to copy directly from stable, to avoid any accidents.

• 🔀 Relates to milestone m4 (Domain Requests)
• 🔀 Relates to milestone m5 (Manage org users & their permissions)

[abroddrick]

Added an AC for just pulling the most recent updates from staging to the chosen sandbox. I'm fine with ag, though we could use any sandbox (besides development and staging).