Bump setuptools from 50.3.0 to 50.3.2

Bumps [setuptools](https://github.com/pypa/setuptools) from 50.3.0 to 50.3.2.
- [Release notes](https://github.com/pypa/setuptools/releases)
- [Changelog](https://github.com/pypa/setuptools/blob/master/CHANGES.rst)
- [Commits](pypa/setuptools@v50.3.0...v50.3.2)

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

Author: dependabot[bot]

requirements_dev.txt

@@ -3,5 +3,5 @@ pip==20.2.3
 pytest==6.1.0
 pytest-cov==2.10.1
 pytest-timeout==1.4.2
-setuptools==50.3.0
+setuptools==50.3.2
 stomp.py==6.1.0