Features
- cloudtrail: create cloudwatch event without needing to create a Trail (#8076) (0567a23), closes #6716
- cognito: user pool - case sensitivity for sign in (460394f), closes #7988 #7235
- core: CfnJson enables intrinsics in hash keys (#8099) (195cd40), closes #8084
- secretsmanager: adds grantWrite to Secret (#7858) (3fed84b)
- sns: add support for subscription DLQ in SNS (383cdb8)
- stepfunctions: new service integration classes for Lambda, SNS, and SQS (#7946) (c038848), closes #6715 #6489