chore(deps-dev): bump types-python-dateutil

Bumps [types-python-dateutil](/~https://github.com/python/typeshed) from 2.8.19.20240311 to 2.9.0.20240315.
- [Commits](/~https://github.com/python/typeshed/commits)

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

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

requirements/dev.txt

@@ -8,6 +8,6 @@ types-chardet==5.0.4.6
 types-ujson==5.9.0.0
 types-PyYAML==6.0.12.20240311
 types-requests==2.31.0.20240311 # 2.31.0.7 introduced a regression
-types-python-dateutil==2.8.19.20240311
+types-python-dateutil==2.9.0.20240315
 ruff==0.3.3
 wheel==0.43.0