Front change history: [us-west-2] Increased failure rate on public API

Front reported a major public API incident in us-west-2, with increased 5xx errors potentially affecting sending and receiving messages on some channels. It ran from 2024-11-18 20:03 UTC to 2024-11-18 22:18 UTC, lasting 2 h 15 min. Errors subsided before resolution; no root cause or fix was stated.