Fixes Tox configuration

[kingbuzzman]

https://tox.wiki/en/latest/changelog.html#deprecations-and-removals-4-0-0rc4

whitelist_externals -> allowlist_externals

https://github.com/FactoryBoy/factory_boy/actions/runs/4105486224/jobs/7082408580 (this might expire after a day..)

docs: commands[0]> make doc spelling
[24](https://github.com/FactoryBoy/factory_boy/actions/runs/4105486224/jobs/7082408580#step:5:25)
docs: failed with make is not allowed, use allowlist_externals to allow it
[25](https://github.com/FactoryBoy/factory_boy/actions/runs/4105486224/jobs/7082408580#step:5:26)
.pkg: _exit> python /opt/hostedtoolcache/Python/3.11.1/x64/lib/python3.11/site-packages/pyproject_api/_backend.py True setuptools.build_meta __legacy__

[kingbuzzman]

@francoisfreitag @rbarrois can you guys look at this, please? This an issue currently occurring on master

[kingbuzzman]

You can also see it failing on this PR #997

[francoisfreitag]

Thank you 🙏