[Admin] Revisit and update branch protection rules

[peternied]

After reviewing our many legacy branches, the protection rules are not setup correctly, such as the following pull request on 2.1

As there are outstanding pull requests in nearly all branches, make sure the rules are updated and the correct workflow checks are required for changes to be merged.

[stephen-crawford]

[Triage] The maintainers of the Security repository, discussed the topic and came to a general opinion on how to handle the maintenance of deprecated branches. These details will be consolidated and described below before the issue is closed.

[peternied]

@scrawfor99 was that conversation captured / who will provide the updates?

[stephen-crawford]

Hi @peternied, I had thought you had some notes on the topic from last week. Judging by your comment this is not the case...

[peternied]

OK - thanks, double checking. Basically there are a couple of branches that cannot merge because of the misalignment. I'll be addressing this

[peternied]

This isn't actively being worked on as there are no blocked changes at this time, if this comes back up we can re-prioritize this work

[davidlago]

Closing for now, will reopen when/if it makes sense.