Aws\CostExplorer- This release introduces two new APIs that offer a 1-click experience to refresh Savings Plans recommendations. The two APIs are StartSavingsPlansPurchaseRecommendationGeneration and ListSavingsPlansPurchaseRecommendationGeneration.Aws\EC2- Documentation updates for EC2.Aws\RDS- This release adds the InvalidDBInstanceStateFault to the RestoreDBClusterFromSnapshot operation.Aws\TranscribeService- Amazon Transcribe now supports creating custom language models in the following languages: Japanese (ja-JP) and German (de-DE).Aws\ivschat- Adds PendingVerification error type to messaging APIs to block the resource usage for accounts identified as being fraudulent.