Bump types-python-dateutil from 2.9.0.20251008 to 2.9.0.20251115

Bumps [types-python-dateutil](https://github.com/typeshed-internal/stub_uploader) from 2.9.0.20251008 to 2.9.0.20251115.
- [Commits](https://github.com/typeshed-internal/stub_uploader/commits)

---
updated-dependencies:
- dependency-name: types-python-dateutil
  dependency-version: 2.9.0.20251115
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pyproject.toml

@@ -88,7 +88,7 @@ dev-mypy = [
   "frequenz-client-dispatch[cli,dev-mkdocs,dev-noxfile,dev-pytest]",
   "grpc-stubs == 1.53.0.6",
   "types-protobuf == 6.32.1.20250918",
-  "types-python-dateutil == 2.9.0.20251008",
+  "types-python-dateutil == 2.9.0.20251115",
 ]
 dev-noxfile = ["nox == 2025.10.16", "frequenz-repo-config[lib] == 0.13.6"]
 dev-pylint = [