chore: upgrade to node v16

[pm-pp]

Hey 👋🏻

This action recently started to emit a warning about Node.js 12 actions being deprecated - GitHub Actions: All Actions will begin running on Node16 instead of Node12

This pull request's intention is to address the upgrade to node v16.

Great job with this action!

[arminrosu]

@nwtgck what do you think of this PR, is it merge-able?

[nwtgck]

Good.

I have been preparing to update to Node16. All I have to do before the merge is to actually use the updated action to Node 16 to see if there are any problems. I also think about versioning because some actions did major updates after bumping up to Node 16.

[arminrosu]

I also think about versioning because some actions did major updates after bumping up to Node 16.

Most actions I use that got a major version bump used the node@16 deprecation opportunity to do some other work - like deprecating set::output, which required an upgrade of @actions/github to 5.* for them. e.g. aws-actions/configure-aws-credentials#521

IMO, that would conflate the node@16 upgrade for actions-netlify, though #829 would be nice for future proofing.

---

Thanks again for this action, made my life easier faster :)

[nwtgck]

I'm testing this update now.

I'll write the log.

v1.2 log (I could not find deprecation warning...):

https://github.com/nwtgck/piping-ui-web/actions/runs/3609065235/jobs/6082034736

pm-pp-chore/node16-upgrade branch also works fine:

https://github.com/nwtgck/piping-ui-web/actions/runs/3609084576/jobs/6082063588