Bump requests in /examples/sharedlinks/sharedlinks-backend

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](psf/requests@v2.25.1...v2.31.0)

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

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

examples/sharedlinks/sharedlinks-backend/requirements.txt

@@ -8,7 +8,7 @@ asgiref==3.3.1
     # via django
 certifi==2022.12.7
     # via requests
-chardet==4.0.0
+charset-normalizer==3.1.0
     # via requests
 coreapi==2.3.3
     # via
@@ -45,7 +45,7 @@ openapi-codec==1.3.2
     # via django-rest-swagger
 pytz==2021.1
     # via django
-requests==2.25.1
+requests==2.31.0
     # via coreapi
 simplejson==3.17.2
     # via django-rest-swagger