Bump requests in /samples/server/petstore/python-fastapi

Bumps [requests](https://github.com/psf/requests) from 2.32.0 to 2.32.4.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](psf/requests@v2.32.0...v2.32.4)

---
updated-dependencies:
- dependency-name: requests
  dependency-version: 2.32.4
  dependency-type: direct:production
...

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

Author: dependabot[bot]

samples/server/petstore/python-fastapi/requirements.txt

@@ -24,7 +24,7 @@ pydantic>=2
 python-dotenv==0.17.1
 python-multipart==0.0.18
 PyYAML>=5.4.1,<6.1.0
-requests==2.32.0
+requests==2.32.4
 Rx==1.6.1
 starlette==0.40.0
 typing-extensions==4.13.2