Bump requests from 2.5.1 to 2.20.0

Bumps [requests](https://github.com/requests/requests) from 2.5.1 to 2.20.0.
- [Release notes](https://github.com/requests/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/master/HISTORY.md)
- [Commits](https://github.com/requests/requests/compare/v2.5.1...v2.20.0

)

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

setup.py

@@ -7,5 +7,5 @@ setup(name="microservices",
       platforms = ["any"],
       license = "BSD",
       packages = find_packages(),
-      install_requires = ["Flask==0.10.1", "requests==2.5.1", "wsgiref==0.1.2" ],
+      install_requires = ["Flask==0.10.1", "requests==2.20.0", "wsgiref==0.1.2" ],
       )