chore(deps-dev): bump acorn from 8.5.0 to 8.6.0 (#4040)

Bumps [acorn](https://github.com/acornjs/acorn) from 8.5.0 to 8.6.0.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](acornjs/acorn@8.5.0...8.6.0)

---
updated-dependencies:
- dependency-name: acorn
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]