Feature Request Checklist

• 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

Mocha currently depends an older major version of workerpool:

Suggested Solution

workerpool@9.2.0 is the latest. It'd be nice to bump to that, so users aren't stuck on a dep that's many major versions behind.

Alternatives

This isn't critical and I don't think we need to do it. But it's nice ecosystem cleanup in general.

I don't know of popular alternatives to workerpool and haven't looked for them.

Additional Info

workerpool@9 still supports Node.js versions older than Mocha's minimums, so I don't think that'd be a blocker.