Dagster change history: Scheduler and sensor disruptions

Dagster reported a critical API incident disrupting schedulers and sensors from 2022-11-02 19:04 UTC to 2022-11-02 20:34 UTC, lasting 1 h 30 min. Dagster reported an agent request queue backend upgrade at the start; a fix was implemented by 2022-11-02 20:29 UTC, and the incident was resolved.