chore(deps-dev): bump eligibility-api from 2023.6.1 to 2023.9.1

Bumps [eligibility-api](https://github.com/cal-itp/eligibility-api) from 2023.6.1 to 2023.9.1.
- [Release notes](https://github.com/cal-itp/eligibility-api/releases)
- [Commits](cal-itp/eligibility-api@2023.06.01...2023.09.1)

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

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

pyproject.toml

@@ -9,7 +9,7 @@ dependencies = [
     "Authlib==1.2.1",
     "Django==4.2.5",
     "django-csp==3.7",
-    "eligibility-api==2023.6.1",
+    "eligibility-api==2023.9.1",
     "requests==2.31.0",
     "sentry-sdk==1.31.0",
     "six==1.16.0",