🛠️ Repo: `npm i` with Node 22.21.1 gives EBADENGINE for `npm-run-all2`

[mark-wiemer]

Tooling Suggestion Checklist

• I have tried restarting my IDE and the issue persists.
• I have pulled the latest main branch of the repository.
• I have read and agree to Mocha's Code of Conduct and Contributing Guidelines
• I have searched for related issues and issues with the faq label, but none matched my issue.
• I want to provide a PR to resolve this

Overview

I merged #6019 which I didn't notice had a breaking change to only support Node 22.22+. This goes against Mocha's engine of 20.19+ and although it only impacts contributors to Mocha, it's worth a fix.

Additional Info

The PR description of #6019 does not note the engine change. We need to be more careful in reviewing these changes going forward.