Bump xml2rfc from 3.24.0 to 3.27.0

Bumps [xml2rfc](https://github.com/ietf-tools/xml2rfc) from 3.24.0 to 3.27.0.
- [Release notes](https://github.com/ietf-tools/xml2rfc/releases)
- [Changelog](https://github.com/ietf-tools/xml2rfc/blob/main/CHANGELOG.md)
- [Commits](ietf-tools/xml2rfc@v3.24.0...v3.27.0)

---
updated-dependencies:
- dependency-name: xml2rfc
  dependency-type: indirect
...

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

Author: dependabot[bot]