Bump @codemirror/legacy-modes from 6.4.1 to 6.4.2

Bumps [@codemirror/legacy-modes](https://github.com/codemirror/legacy-modes) from 6.4.1 to 6.4.2.
- [Changelog](https://github.com/codemirror/legacy-modes/blob/main/CHANGELOG.md)
- [Commits](https://github.com/codemirror/legacy-modes/compare/6.4.1...6.4.2

)

---
updated-dependencies:
- dependency-name: "@codemirror/legacy-modes"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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