Bump requests from 2.25.1 to 2.31.0

Bumps [requests](https://github.com/psf/requests) from 2.25.1 to 2.31.0.
- [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/v2.25.1...v2.31.0)

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

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

requirements.txt

@@ -23,7 +23,7 @@ PySocks==1.7.1
 python-telegram-bot==13.6
 pytz==2021.1
 regex==2021.4.4
-requests==2.25.1
+requests==2.31.0
 requests-oauthlib==1.3.0
 six==1.16.0
 slack-webhook==1.0.6