v5 emits Node DEP0040 punycode deprecation warning on successful deployments

[konard]

What happened

A normal successful actions/deploy-pages@v5 invocation emits:

(node:...) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.

Public reproduction: the Deploy Pages artifact step in https://github.com/link-assistant/formal-ai/actions/runs/29463393707.

Minimal workflow

- uses: actions/deploy-pages@v5
  with:
    token: ${{ github.token }}

Suggested fix

Update the dependency that imports Node core punycode, regenerate dist/, and add a Node 24 smoke test that fails on DEP0040. Successful deployments should not require consumers to suppress runtime warnings.