chore(deps-dev): bump cspell from 9.6.3 to 9.6.4 (mdn#43012)

Bumps [cspell](https://github.com/streetsidesoftware/cspell/tree/HEAD/packages/cspell) from 9.6.3 to 9.6.4.
- [Release notes](https://github.com/streetsidesoftware/cspell/releases)
- [Changelog](https://github.com/streetsidesoftware/cspell/blob/main/packages/cspell/CHANGELOG.md)
- [Commits](https://github.com/streetsidesoftware/cspell/commits/v9.6.4/packages/cspell)

---
updated-dependencies:
- dependency-name: cspell
  dependency-version: 9.6.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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