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

@@ -6,7 +6,7 @@ build-backend = "setuptools.build_meta"
 classifiers = ["Programming Language :: Python :: 3 :: Only"]
 description = "Server implementation of the Eligibility Verification API"
 dependencies = [
-    "eligibility-api==2023.6.1",
+    "eligibility-api==2023.9.1",
     "Flask==2.3.3",
     "Flask-RESTful==0.3.10",
     "Flask-SQLAlchemy==3.1.1",