Bump sabre/dav from 4.1.5 to 4.3.1

Bumps [sabre/dav](https://github.com/sabre-io/dav) from 4.1.5 to 4.3.1.
- [Release notes](https://github.com/sabre-io/dav/releases)
- [Changelog](https://github.com/sabre-io/dav/blob/master/CHANGELOG.md)
- [Commits](sabre-io/dav@4.1.5...4.3.1)

---
updated-dependencies:
- dependency-name: sabre/dav
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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