chore(main): update github actions node version

[StanHannebelle]

This updates node version to 16 and upgrades versions of actions/checkout and actions/setup-node

Should resolve #35

[StanHannebelle]

@bcoe Could you please have a look at this PR?

[chrisjohnson00]

Can confirm this works!

[danielloader]

It's been so long you'll need to bump this again to Node 20.

[danielloader]

@StanHannebelle how do you feel about hosting a fork with this PR merged in for Node 20 so we can get on with our lives without the deprecation warnings?

[chrisjohnson00]

@StanHannebelle how do you feel about hosting a fork with this PR merged in for Node 20 so we can get on with our lives without the deprecation warnings?

My work uses this action, and we have a "private fork" (clone not fork) for this. I'd suggest you do something similar. FWIW: I've a PR open in Stan's fork for over a year without any comment/feedback, so it isn't looking like he's interested or using this anymore.

I'll also note that you can replace this action with actions/github-script but it isn't as user friendly:

      - name: Add Breaking Label
        if: steps.check-breaking.outputs.is-breaking-change == 'true'
        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea  # v7.0.1, 2023-11-17
        with:
          # context.issue.number will return either an issue number or a PR number:
          # https://github.com/actions/toolkit/blob/92695f58daf7b460a9ae2a4682d8e65a5dea7bc8/packages/github/src/context.ts#L60
          script: |
            github.rest.issues.addLabels({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              labels: ['breaking']
            });