Bump requests from 2.20.1 to 2.22.0

Bumps [requests](https://github.com/requests/requests) from 2.20.1 to 2.22.0.
- [Release notes](https://github.com/requests/requests/releases)
- [Changelog](https://github.com/kennethreitz/requests/blob/master/HISTORY.md)
- [Commits](psf/requests@v2.20.1...v2.22.0)

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

Author: dependabot-preview[bot]

requirements.txt

@@ -1,5 +1,5 @@
 tornado==5.1.1
-requests==2.20.1
+requests==2.22.0
 pyjwt==1.7.1
 gitpython==2.1.12
 there==0.0.9