Bump python-dateutil from 2.8.0 to 2.8.1
Bump python-dateutil from 2.8.0 to 2.8.1

Bumps [python-dateutil](https://github.com/dateutil/dateutil) from 2.8.0 to 2.8.1.
- [Release notes](https://github.com/dateutil/dateutil/releases)
- [Changelog](https://github.com/dateutil/dateutil/blob/master/NEWS)
- [Commits](https://github.com/dateutil/dateutil/compare/2.8.0...2.8.1)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
gpodder/mygpo,gpodder/mygpo,gpodder/mygpo,gpodder/mygpo