build(deps): bump lxml from 5.3.0 to 6.0.0

Bumps [lxml](https://github.com/lxml/lxml) from 5.3.0 to 6.0.0.
- [Release notes](https://github.com/lxml/lxml/releases)
- [Changelog](https://github.com/lxml/lxml/blob/master/CHANGES.txt)
- [Commits](lxml/lxml@lxml-5.3.0...lxml-6.0.0)

---
updated-dependencies:
- dependency-name: lxml
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -45,7 +45,7 @@ tests = [
     "click==8.1.8",
     "inflect==7.5.0",
     "pygithub==2.5.0",
-    "lxml==5.3.0",
+    "lxml==6.0.0",
     "numpy==2.2.6",
     "parse==1.20.2",
     "pytest==8.3.4",