build(deps-dev): Bump sabre/xml from 2.2.5 to 2.2.6

Bumps [sabre/xml](https://github.com/sabre-io/xml) from 2.2.5 to 2.2.6.
- [Release notes](https://github.com/sabre-io/xml/releases)
- [Changelog](https://github.com/sabre-io/xml/blob/master/CHANGELOG.md)
- [Commits](sabre-io/xml@2.2.5...2.2.6)

---
updated-dependencies:
- dependency-name: sabre/xml
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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