What's Changed
- fix(ec2): Allow FromPort/ToPort for ICMPv6 in W3687 by @kddejong in #4600
- Remove SAM translator dependency, validate SAM templates via schemas by @kddejong in #4491
- Update CloudFormation schemas to
2026-08-04 by @github-actions[bot] in #4601
Full Changelog: v1.53.3...v1.54.0