chore: update to latest steering schema for playout endpoint

schemas/openapi-steering.json

src/aura_steering_api/models/nested_timeslot.py

src/aura_steering_api/models/playout_entry.py

src/aura_steering_api/models/playout_entry_episode.py

src/aura_steering_api/models/playout_entry_schedule.py

src/aura_steering_api/models/playout_entry_show.py

src/aura_steering_api/models/time_slot.py

src/aura_tank_api/__init__.py