Bump @codemirror/lint from 6.8.1 to 6.8.4

Bumps [@codemirror/lint](https://github.com/codemirror/lint) from 6.8.1 to 6.8.4.
- [Changelog](https://github.com/codemirror/lint/blob/main/CHANGELOG.md)
- [Commits](codemirror/lint@6.8.1...6.8.4)

---
updated-dependencies:
- dependency-name: "@codemirror/lint"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>