Bump rehype-highlight from 6.0.0 to 7.0.2

Bumps [rehype-highlight](https://github.com/rehypejs/rehype-highlight) from 6.0.0 to 7.0.2.
- [Release notes](https://github.com/rehypejs/rehype-highlight/releases)
- [Commits](rehypejs/rehype-highlight@6.0.0...7.0.2)

---
updated-dependencies:
- dependency-name: rehype-highlight
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]