build(deps): bump python-dateutil from 2.8.2 to 2.9.0.post0

Bumps [python-dateutil](https://github.com/dateutil/dateutil) from 2.8.2 to 2.9.0.post0.
- [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
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

poetry.lock

@@ -10,7 +10,7 @@ flask = "^1.1"
 flask-caching = "^1.10"
 flask-cors = "^4.0"
 gunicorn = "^21.2"
-python-dateutil = "^2.8"
+python-dateutil = "^2.9"
 simpleflake = "^0.1.5"
 sentry-sdk = "^1.40.6"
 redis = "^3.3"