Replace usage of VError with Error.cause

[davidjgoss]

🤔 What's changed?

This PR removes verror, which was used to propagate errors with the original stack trace plus local context, as it is now unmaintained and is not tolerant of thrown objects that are not instances of Error.

Instead, we can make use of a newer native JavaScript feature, Error.cause, to achieve the same thing.

⚡️ What's your motivation?

Fixes #2359

🏷️ What kind of change is this?

• :bank: Refactoring/debt/DX (improvement to code design, tooling, documentation etc. without changing behaviour)
• :bug: Bug fix (non-breaking change which fixes a defect)

📋 Checklist:

• [x] I agree to respect and uphold the Cucumber Community Code of Conduct
• [x] I've changed the behaviour of the code
  • [x] I have added/updated tests to cover my changes.
• [ ] My change requires a change to the documentation.
  • [ ] I have updated the documentation accordingly.
• [x] Users should know about my change
  • [x] I have added an entry to the "Unreleased" section of the CHANGELOG, linking to this pull request.

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[coveralls]

coverage: 98.381% (-0.002%) from 98.383% when pulling 4bf0eb2296fa2b1fe43b5797008a0def73fcba31 on fix/remove-verror into 2a95e47faeeed4bbf8ac7c8067b54ee1d18a589f on main.