Redmine

GitHub Actions shows the following warning:

https://github.com/redmine/redmine/actions/runs/22947774155/job/66604420817#step:15:2

Node.js 20 actions are deprecated. The following actions are running on Node.js 20 and may not work as expected: actions/checkout@v4, actions/upload-artifact@v4. Actions will be forced to run with Node.js 24 by default starting June 2nd, 2026.

Update the workflow dependencies to address this warning.

I confirmed that all workflows pass with this change.