Bump setuptools from 60.5.0 to 60.6.0

Bumps [setuptools](https://github.com/pypa/setuptools) from 60.5.0 to 60.6.0.
- [Release notes](https://github.com/pypa/setuptools/releases)
- [Changelog](https://github.com/pypa/setuptools/blob/main/CHANGES.rst)
- [Commits](pypa/setuptools@v60.5.0...v60.6.0)

---
updated-dependencies:
- dependency-name: setuptools
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements-dev.txt

@@ -8,7 +8,7 @@ docformatter==1.4
 autoflake==1.4
 tox==3.24.5
 wheel==0.37.1
-setuptools==60.5.0
+setuptools==60.6.0
 twine==3.7.1
 pillow==8.4.0
 coverage[toml]==6.3