Bump lxml from 5.4.0 to 6.0.2 in /requirements (#23960)

Bumps [lxml](https://github.com/lxml/lxml) from 5.4.0 to 6.0.2.
- [Release notes](https://github.com/lxml/lxml/releases)
- [Changelog](https://github.com/lxml/lxml/blob/master/CHANGES.txt)
- [Commits](lxml/lxml@lxml-5.4.0...lxml-6.0.2)

---
updated-dependencies:
- dependency-name: lxml
  dependency-version: 6.0.2
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]