…lution (#4303)

…kflow step type.

…ups APIs to allow the NamePrefix field to start with a number. Updated the validation for executionRole field to support any role name.

…SON (application/json) message types to be sent in the SendMessage API.

…ation/json) message types to be sent as part of the initial message in the StartChatContact API.

… now offers cross-region, cross-account tracking of commercial Linux subscriptions on AWS. This includes subscriptions purchased as part of EC2 subscription-included AMIs, on the AWS Marketplace, or brought to AWS via Red Hat Cloud Access Program.

…3 objects that use the S3 Glacier Instant Retrieval (Glacier_IR) storage class.

… support to an existing Amazon SageMaker Studio domain. It allows setting your RStudio on SageMaker environment configuration parameters and also updating the RStudioConnectUrl and RStudioPackageManagerUrl parameters for existing domains