Bump requests from 2.20.0 to 2.27.1

Bumps [requests](https://github.com/psf/requests) from 2.20.0 to 2.27.1.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](https://github.com/psf/requests/compare/v2.20.0...v2.27.1)

---
updated-dependencies:
- dependency-name: requests
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -21,7 +21,7 @@ pyasn1==0.4.4
 pylint==2.1.1
 python-mimeparse==1.6.0
 pytz==2018.7
-requests==2.20.0
+requests==2.27.1
 rsa==4.0
 six==1.11.0
 typed-ast==1.1.0