Node 16 is deprecated on GitHub, use Node 20

[TWiStErRob]

Ensure the following before filing this issue

• I verified it reproduces with the latest version with - uses: ruby/setup-ruby@v1 (see Versioning policy)

• I tried to reproduce the issue locally by following the workflow steps (including all commands done by ruby/setup-ruby, except for Downloading Ruby & Extracting Ruby),
  and it did not reproduce locally (if it does reproduce locally, it's not a ruby/setup-ruby issue)

Are you running on a GitHub-hosted runner or a self-hosted runner?

GitHub-hosted runner

Link to the failed workflow job (must be a public workflow job, so the necessary information is available)

N/A, it was triggered on private, couldn't repro on public, it seems not all runners have the deprecation yet.

Any other notes?

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, ruby/setup-ruby@v1, actions/upload-artifact@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

[eregon]

Could you make a PR? You just need to change https://github.com/ruby/setup-ruby/blob/master/action.yml

[TWiStErRob]

@eregon #540, other actions increased their major version for this change.
e.g. https://github.com/actions/checkout/releases/tag/v4.0.0

[TWiStErRob]

Note: the warning won't show for now: actions/upload-artifact#444 (comment), but a released version should be ready for when they bring it back.

[eregon]

@eregon #540, other actions increased their major version for this change. e.g. https://github.com/actions/checkout/releases/tag/v4.0.0

Yeah I know. IMO that's unnecessary work, it's making everyone change things when nothing needs to change in their workflow actually, at least as long as they are running on GitHub-hosted runners. And if not, then node20 should be installed on self-hosted runners. So anyway, nothing meaningful to change for workflows, so a waste of a major version.

[srallen]

👋 I'm still seeing warnings about upgrading to Node 20:

I believe this is due to this action's use of actions/cache@v3:

setup-ruby/package.json

Line 25 in 22fdc77

"@actions/cache": "^3",

Version 4 for actions/cache doesn't appear to actually have breaking changes. Would it be possible for this action to bump to v4 of actions/cache?

[TWiStErRob]

That's a node package, embedded into dist. I don't think GHA can see that.

Are you sure there's no actions/cache@v3 in your workflow or one of the composite actions?

[srallen]

@TWiStErRob I found v3 of action/cache in another 3rd party composite action that I missed the first time through trying to find the source of the warning I was seeing. Thanks for taking the time to respond.