Bump requests in /src/lambda/stepfunction_subscription_publisher

Bumps [requests](https://github.com/psf/requests) from 2.31.0 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@v2.31.0...v2.32.4)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/lambda/stepfunction_subscription_publisher/requirements.txt

@@ -1,2 +1,2 @@
 aws-requests-auth==0.4.3
-requests==2.31.0
+requests==2.32.4