Update to newest version of lxml

[TakumiHendricksDev]

I'm running into dependency issues where I am required to downgrade lxml to 4.9.4 from 5.1.0. Would be really nice to have this upgraded as I have other packages depending on this package as well.

[TakumiHendricksDev]

Here is the branch for this issue.

[patrys]

This is also blocking for users of Python 3.13 since lxml versions before 5.x are incompatible.