Vanta change history: Sync operations failing for GCP Firestore

Vanta reported a major incident with GCP Firestore sync operations: syncs for GCP Firebase projects and databases failed, leaving some resource data stale in the Vanta app. It started at 2026-09-09 19:56 UTC and was resolved at 2026-09-10 21:36 UTC, lasting 25 h 39 min; Vanta worked with the GCP team but stated no cause or specific fix.