Bump homeassistant-stubs from 2023.8.1 to 2023.9.3

Bumps [homeassistant-stubs](https://github.com/KapJI/homeassistant-stubs) from 2023.8.1 to 2023.9.3.
- [Release notes](https://github.com/KapJI/homeassistant-stubs/releases)
- [Commits](KapJI/homeassistant-stubs@2023.8.1...2023.9.3)

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

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

pyproject.toml

@@ -28,7 +28,7 @@ dependencies = ["python-dateutil", "feedparser==6.0.10", "homeassistant"]
 [project.optional-dependencies]
 dev = [
   "black",
-  "homeassistant-stubs==2023.8.1",
+  "homeassistant-stubs==2023.9.3",
   "pytest==7.4.2",
   "mypy",
   "ruff",