backend: Port code to updated swh-scheduler API
The oldest part of the scheduler API was updated to use model classes (based on attr package) instead of dictionaries in order to improve typing.
Depends on swh-scheduler!378 (merged)
Staging instance, all changes can be removed at any time
The oldest part of the scheduler API was updated to use model classes (based on attr package) instead of dictionaries in order to improve typing.
Depends on swh-scheduler!378 (merged)