Update lxml requirement from >=4.9 to >=6.1.1 in /scripts

Updates the requirements on [lxml](https://github.com/lxml/lxml) to permit the latest version.
- [Release notes](https://github.com/lxml/lxml/releases)
- [Changelog](https://github.com/lxml/lxml/blob/master/CHANGES.txt)
- [Commits](lxml/lxml@lxml-4.9.0...lxml-6.1.1)

---
updated-dependencies:
- dependency-name: lxml
  dependency-version: 6.1.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

scripts/requirements.txt

@@ -1,2 +1,2 @@
-lxml>=4.9
+lxml>=6.1.1
 pytest>=7.0