Terraform Cloud (HCP) change history: Hashicorp Linux packages GPG key rotation

HashiCorp reported a major Linux package-signing degradation: the published GPG fingerprint was outdated and could mismatch the active key, affecting package verification. The incident ran from 2026-09-10 13:24 UTC to 2026-09-10 20:40 UTC (7 h 16 min). HashiCorp updated apt/rpm repository keys and documentation, worked to re-sign older-key packages, and reported resolution.