Bump lxml from 6.0.1 to 6.1.0

Bumps [lxml](https://github.com/lxml/lxml) from 6.0.1 to 6.1.0.
- [Release notes](https://github.com/lxml/lxml/releases)
- [Changelog](https://github.com/lxml/lxml/blob/master/CHANGES.txt)
- [Commits](lxml/lxml@lxml-6.0.1...lxml-6.1.0)

---
updated-dependencies:
- dependency-name: lxml
  dependency-version: 6.1.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -4,7 +4,7 @@ dm-tree==0.1.9
 glfw==2.9.0
 h5py==3.14.0
 labmaze==1.0.6
-lxml==6.0.1
+lxml==6.1.0
 mock==5.2.0
 mujoco==3.8.0
 numpy==2.3.2; python_version >= '3.11'