Don't install lxml on Windows on Python 3.11 (#14170)

Windows wheels for Python 3.11 are not included in the release, and
`cibuildwheels` cannot build them, this causes mypy wheel build failure
on Windows for Python 3.11, see e.g.
https://github.com/mypyc/mypy_mypyc-wheels/actions/runs/3527396237/jobs/5916408981

We need to do this until lxml/lxml#360 is
released (hopefully in next few weeks).

cc @hauntsaninja @JukkaL

Author: ilevkivskyi

test-requirements.txt

@@ -7,7 +7,7 @@ flake8==5.0.4           # must match version in .pre-commit-config.yaml
 flake8-bugbear==22.9.23 # must match version in .pre-commit-config.yaml
 flake8-noqa==1.2.9      # must match version in .pre-commit-config.yaml
 isort[colors]==5.10.1   # must match version in .pre-commit-config.yaml
-lxml>=4.9.1
+lxml>=4.9.1; python_version<'3.11' or sys_platform!='win32'
 psutil>=4.0
 # pytest 6.2.3 does not support Python 3.10
 pytest>=6.2.4