chore(deps): update dependency tox to >=4.16.0

This MR contains the following updates:

Package	Type	Update	Change
tox (changelog)	dev	minor	>=4.15.1 -> >=4.16.0

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Release Notes

tox-dev/tox (tox)

v4.16.0

Compare Source

What's Changed

• Fix two small documentation issues by @​srenfo in https://github.com/tox-dev/tox/pull/3297
• Fix tests after new setuptools by @​gaborbernat in https://github.com/tox-dev/tox/pull/3299
• Add windir to the default list of pass_env variables on Windows by @​kurtmckee in https://github.com/tox-dev/tox/pull/3303

New Contributors

• @​srenfo made their first contribution in https://github.com/tox-dev/tox/pull/3297

Full Changelog: https://github.com/tox-dev/tox/compare/4.15.1...4.16.0

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