Bump lxml from 5.3.0 to 6.0.0 (#2146)

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](https://github.com/lxml/lxml/compare/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
...

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

pyproject.toml

@@ -45,7 +45,7 @@ future-annotations= "^1.0.0"
 html5lib = "^1.1"
 idna = "^3.4"
 Jinja2 = "^3.1.6"
-lxml = "^5.3.0"
+lxml = ">=5.3,<7.0"
 MarkupSafe = "^3.0.2"
 mock = "^5.1.0"
 multidict = "^6.6.3"