Bump pipenv from 2023.8.28 to 2023.9.8 in /python/helpers

Bumps [pipenv](https://github.com/pypa/pipenv) from 2023.8.28 to 2023.9.8.
- [Release notes](https://github.com/pypa/pipenv/releases)
- [Changelog](https://github.com/pypa/pipenv/blob/main/CHANGELOG.md)
- [Commits](pypa/pipenv@v2023.8.28...v2023.9.8)

---
updated-dependencies:
- dependency-name: pipenv
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

python/helpers/requirements.txt

@@ -2,7 +2,7 @@ pip==23.2.1
 pip-tools==7.3.0
 flake8==6.1.0
 hashin==0.17.0
-pipenv==2023.8.28
+pipenv==2023.9.8
 pipfile==0.0.2
 poetry==1.6.1