Bump requests from 2.27.1 to 2.31.0 in /requirements

Bumps [requests](https://github.com/psf/requests) from 2.27.1 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@v2.27.1...v2.31.0)

---
updated-dependencies:
- dependency-name: requests
  dependency-type: indirect
...

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

requirements/ci-release.txt

@@ -51,7 +51,7 @@ readme-renderer==34.0
     # via
     #   -r ci-release.in
     #   twine
-requests==2.27.1
+requests==2.31.0
     # via
     #   requests-toolbelt
     #   twine

requirements/ci-tests.txt

@@ -33,7 +33,7 @@ py==1.11.0
     # via tox
 pyparsing==3.0.7
     # via packaging
-requests==2.27.1
+requests==2.31.0
     # via coveralls
 six==1.16.0
     # via

requirements/dev.txt

@@ -82,7 +82,7 @@ pytz==2022.1
     # via babel
 pyyaml==6.0
     # via pre-commit
-requests==2.27.1
+requests==2.31.0
     # via sphinx
 semantic-version==2.9.0
     # via -r tests.in

requirements/docs.txt

@@ -31,7 +31,7 @@ pyparsing==3.0.7
     # via packaging
 pytz==2022.1
     # via babel
-requests==2.27.1
+requests==2.31.0
     # via sphinx
 snowballstemmer==2.2.0
     # via sphinx