sysutils/py-hcloud: update to 2.1.0

There will be a breaking change to the API from 2024-08-05. See:
https://docs.hetzner.cloud/changelog#2024-07-25-cloud-api-returns-traffic-information-in-different-format

This release marks the affected fields as 'Deprecated'

Changes: https://github.com/hetznercloud/hcloud-python/blob/main/CHANGELOG.md
Reported by: repology