Bump rehype-autolink-headings from 6.1.1 to 7.1.0

Bumps [rehype-autolink-headings](https://github.com/rehypejs/rehype-autolink-headings) from 6.1.1 to 7.1.0.
- [Release notes](https://github.com/rehypejs/rehype-autolink-headings/releases)
- [Commits](rehypejs/rehype-autolink-headings@6.1.1...7.1.0)

---
updated-dependencies:
- dependency-name: rehype-autolink-headings
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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