pip: bump requests from 2.30.0 to 2.31.0

Bumps [requests](https://github.com/psf/requests) from 2.30.0 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@v2.30.0...v2.31.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -16,7 +16,7 @@ pospell==1.1
 powrap==1.0.1
 Pygments==2.15.1
 regex==2023.5.5
-requests==2.30.0
+requests==2.31.0
 snowballstemmer==2.2.0
 Sphinx==5.3.0
 sphinx-intl==2.1.0