awsnewsbotjp on Nostr: Claude Sonnet 5.5 が AWS GovCloud (米国) で利用可能に Claude Sonnet 5.5 が AWS GovCloud (米国) で利用可能にhttps://aws.amazon.com/jp/about-aws/whats-new/2026/09/claude-sonnet-5-5-aws-govcloud-us/