Bump requests from 2.26.0 to 2.31.0

Bumps [requests](https://github.com/psf/requests) from 2.26.0 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/v2.26.0...v2.31.0)

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

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

requirements.txt

@@ -7,5 +7,5 @@ isort==5.9.3
 pur==5.4.2
 python-dotenv==0.19.0
 pytz==2021.1
-requests==2.26.0
+requests==2.31.0
 sqlite_utils==3.17