`bundler-cache: true` triggers Node.js 20 deprecation warning from internal `actions/cache@v4`

[yuki9431]

Description

When using ruby/setup-ruby@v1 with bundler-cache: true, the following warning appears in GitHub Actions logs:

Node.js 20 actions are deprecated. The following actions are running on Node.js 20 and may not work as expected: actions/cache/restore@v4.

Details

• package.json already specifies @actions/cache: ^5.0.3
• However, the CI log shows Download action repository 'actions/cache@v4' being fetched
• This warning appears for all workflows using bundler-cache: true

Expected behavior

No Node.js 20 deprecation warning related to actions/cache when using bundler-cache: true.

Possible fix

Since package.json already specifies @actions/cache@^5.0.3, rebuilding dist/index.js may resolve this issue.

[eregon]

I don't see any such warning in CI, do you have an example public run showing that warning?

My guess is your workflow is using actions/cache@v4 directly, and so it's not an issue of this action.

I will close because you didn't respect the issue template (and that would have helped a lot here).