Several in-use GitHub Actions use outdated NodeJS versions

What steps does it take to reproduce the issue?

• When does this issue occur?
  When GitHub Workflows are run.

• Which page(s) does it occurs on?
  On GitHub Workflows/Actions run result pages, for example https://github.com/IQSS/dataverse/actions/runs/11263238116.

• What happens?
  Above or below the results of a workflow run, annotations warn about Actions that use versions of NodeJS that are end of life. E.g., the Checkstyle job uses actions/checkout@v2, which uses Node 12.

• To whom does it occur (all users, curators, superusers)?
  Developers

• What did you expect to happen?
  No warnings should be produced (because workflows should use more recent and supported Actions).

Which version of Dataverse are you using?
n/a – this is about the infrastructure.

Any related open or closed issues to this bug report?
#9829 is a different example of an outdated workflow, but it is not related otherwise.

Screenshots:

https://github.com/IQSS/dataverse/actions/runs/11263238116 should be clear enough.

Are you thinking about creating a pull request for this issue?
I do consider it, although we can let Dependabot do it as well.

Review the GitHub workflow definitions and the example run at actions/runs/11263238116, starting with the Checkstyle job and its actions/checkout@v2 usage. Identify the other Actions producing end-of-life NodeJS warnings, update them to supported versions, and confirm workflow results no longer show those warnings.