chore(deps): update python-dateutil requirement

Updates the requirements on [python-dateutil](https://github.com/dateutil/dateutil) to permit the latest version.
- [Release notes](https://github.com/dateutil/dateutil/releases)
- [Changelog](https://github.com/dateutil/dateutil/blob/master/NEWS)
- [Commits](dateutil/dateutil@2.8.2...2.9.0.post0)

---
updated-dependencies:
- dependency-name: python-dateutil
  dependency-type: direct:production
...

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

packages/serialization/text/pyproject.toml

@@ -27,7 +27,7 @@ include = ["CHANGELOG.md", "LICENSE"]
 [tool.poetry.dependencies]
 python = ">=3.8,<4.0"
 microsoft-kiota-abstractions = {path="../../abstractions/", develop=true}
-python-dateutil = "2.8.2"
+python-dateutil = "2.9.0.post0"
 
 [tool.poetry.group.dev.dependencies]
 yapf = "^0.40.2"