Update tox requirement from ~=4.11 to ~=4.16

Updates the requirements on [tox](https://github.com/tox-dev/tox) to permit the latest version.
- [Release notes](https://github.com/tox-dev/tox/releases)
- [Changelog](https://github.com/tox-dev/tox/blob/main/docs/changelog.rst)
- [Commits](tox-dev/tox@4.11.0...4.16.0)

---
updated-dependencies:
- dependency-name: tox
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

dev-requirements.txt

@@ -17,7 +17,7 @@ pytest-csv~=3.0
 pytest-dotenv~=0.5.2
 pytest-logbook~=1.2
 pytest-xdist~=3.6
-tox~=4.11
+tox~=4.16
 
 # build
 bumpversion~=0.6.0