Bump requests from 2.9.1 to 2.20.0 in /e2e

Bumps [requests](https://github.com/psf/requests) from 2.9.1 to 2.20.0.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](psf/requests@v2.9.1...v2.20.0)

---
updated-dependencies:
- dependency-name: requests
  dependency-type: direct:development
...

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

Author: dependabot[bot]

e2e/requirements-dev.txt

@@ -1 +1 @@
-requests==2.9.1
+requests==2.20.0