Create a new schedule for automated package upgrades. Schedules define when and how often to automatically deploy package upgrades to a fleet of hosts. Each schedule includes: - A filter query to select target hosts - A recurrence rule defining maintenance windows - A version strategy (e.g., always latest, or N versions behind latest) When the schedule triggers during a maintenance window, it automatically creates a deployment that upgrades the Datadog Agent to the specified version on all matching hosts.