Update to use new runners in github actions

[mkorbel1]

Description & Motivation

Updating to use a new type of self-hosted runner for GitHub actions. This should help with the slow pick-up of jobs from the GitHub-hosted runners.

This is an experiment until it's proven out sufficiently.

Related Issue(s)

N/A

Testing

This is it!

Backwards-compatibility

Is this a breaking change that will not be backwards-compatible? If yes, how so?

No

Documentation

Does the change require any updates to documentation? If so, where? Are they included?

No