GitHub Actions CI broken due to latest tox

[adiroiban]

Describe the incorrect behavior you saw

ROOT: will run in automatically provisioned tox, host /opt/hostedtoolcache/Python/3.10.8/x64/bin/python is missing [requires (has)]: tox-wheel>=0.6.0
ROOT: provision> .tox/.tox/bin/python -m tox
/home/runner/work/twisted/twisted/.tox/.tox/bin/python: No module named tox
Error: Process completed with exit code 1.

Describe how to cause this behavior

Just run any test on our CI.

See a build run here

https://github.com/twisted/twisted/actions/runs/3574757910/jobs/6212002907#step:10:12

Additional context

I guess that this is due to tox 4.

I previous run of the same commit, was green and was using "Using cached tox-3.27.1-py2.py3-none-any.whl (86 kB)"

The failing CI using "Downloading tox-4.0.8-py3-none-any.whl"