Bump tox from 4.4.6 to 4.4.7 in /requirements (#1143)

Bumps [tox](https://github.com/tox-dev/tox) from 4.4.6 to 4.4.7.
- [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@4.4.6...4.4.7)

---
updated-dependencies:
- dependency-name: tox
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements/tox.txt

@@ -1,3 +1,3 @@
 -r ./coverage.txt
-tox==4.4.6
+tox==4.4.7
 tox-gh-actions==3.0.0