v2

[freemvmt]

This PR does the following:

• updates Node to LTS and all dependencies to their latest versions
• integrates the vultr-node client into the business logic of this action
• revamps the code (e.g. async/await instead of promises) and makes the logging a bit more verbose
• enables us to spin up vultr instances with different OSes (Alpine, Fedora CoreOS, Flatcar Container Linux, Ubuntu)
• can teardown both instances and DNS records reliably (the old code was failing because we weren't paginating the records in order to filter all of them)

I initially put this logic in planx-new (see theopensystemslab/planx-new#2959) but later realised that was the wrong move, and bundled it over here. This should also mean fewer changes to the github workflows.

[DafyddLlyr]

Fantastic first PR 🎉

Super well documented and clear - great to see.

Nice find on pagination / cursors - makes total sense as the cause of our issues.

A few nitpicks, and some comments on how to handle types, but zero showstoppers here. Looking forward to trying it out 👍

[freemvmt]

Actioned all PR comments. I think this is ready to roll but it could do with a final review!

(in the meantime I've tagged the latest comment as v2.0 in order to do one more round of testing)

[jessicamcinchak]

Changes look great! A couple very minor questions/comments on final read through, but no blockers - excited to get v2 merged & in use over in planx-new ✨