test: Run action on Node 16

[NotMyFault]

The change proposed executes the action with Node 16, rather than 12.

This proposal aligns with GitHub's policy of moving workflows: https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/

Actions still running on Node 12 are labeled as deprecated on every workflow run:

[NotMyFault]

Hey @eps1lon,

is there anything left, that keeps a review on hold?

Thanks!

[carlbuchmann]

+1 for this PR to be merged!

[eps1lon]

Thanks. Not sure why GH actions didn't run on this one without me committing

[NotMyFault]

Thanks. Not sure why GH actions didn't run on this one without me committing

Likely needed a first time approval for me, but worked all right in #92 🤷🏻

[eps1lon]

Likely needed a first time approval for me, but worked all right in #92 🤷🏻

But then it should've displayed that button. Also, I specifically set the repo up to only require approval from new GH users which you certainly aren't.

Maybe I changed the setting while the PR was open so the UI thought "this person doesn't require approval" while the GH action didn't check all PRs when I changed the setting.