Bump requests from 2.28.1 to 2.31.0 in /tests

Bumps [requests](https://github.com/psf/requests) from 2.28.1 to 2.31.0.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](psf/requests@v2.28.1...v2.31.0)

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

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

Author: dependabot[bot]

tests/requirements.txt

@@ -3,5 +3,5 @@ python-dateutil==2.8.2
 paho-mqtt==1.2.3
 pytest-sugar==0.9.4
 pymongo==3.11.2
-requests==2.28.1
+requests==2.31.0
 Pillow==9.3.0