Bump python-dateutil from 2.8.1 to 2.8.2

Bumps [python-dateutil](https://github.com/dateutil/dateutil) from 2.8.1 to 2.8.2.
- [Release notes](https://github.com/dateutil/dateutil/releases)
- [Changelog](https://github.com/dateutil/dateutil/blob/master/NEWS)
- [Commits](https://github.com/dateutil/dateutil/compare/2.8.1...2.8.2)

---
updated-dependencies:
- dependency-name: python-dateutil
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -5,7 +5,7 @@ flask==1.1.2
 jinja2==2.11.3
 lxml==4.6.3
 pygments==2.9.0
-python-dateutil==2.8.1
+python-dateutil==2.8.2
 pyyaml==5.4.1
 httpx[http2]==0.17.1
 Brotli==1.0.9