chore(deps): bump rehype-citation from 2.0.0 to 2.1.1 (#1341)

Bumps [rehype-citation](https://github.com/timlrx/rehype-citation) from 2.0.0 to 2.1.1.
- [Release notes](https://github.com/timlrx/rehype-citation/releases)
- [Commits](https://github.com/timlrx/rehype-citation/compare/v2.0.0...v2.1.1)

---
updated-dependencies:
- dependency-name: rehype-citation
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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