scallywag error

[Daisuke Fujimura]

I am reporting a scallywag error during GitHub Actions.

https://github.com/cygwin/scallywag/actions/runs/28443412305/job/84286627831

> Node 20 is being deprecated. This workflow is running with Node 24 by default. If you need to temporarily use Node 20, you can set the ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true environment variable. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/