Bump requests in /incubating/google-secret-manager/src

Bumps [requests](https://github.com/psf/requests) from 2.28.1 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@v2.28.1...v2.31.0)

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

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

Author: dependabot[bot]

incubating/google-secret-manager/src/requirements.txt

@@ -32,7 +32,7 @@ protobuf==4.21.9
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pymongo==4.3.2
-requests==2.28.1
+requests==2.31.0
 rsa==4.9
 six==1.16.0
 soupsieve==2.3.2.post1