Aws\DynamoDB- Documentation updates for DynamoDB.Aws\EC2- This release adds support for a new boot mode for EC2 instances called 'UEFI Preferred'.Aws\Macie2- Documentation updates for Amazon MacieAws\MediaConvert- The AWS Elemental MediaConvert SDK has improved handling for different input and output color space combinations.Aws\MediaLive- AWS Elemental MediaLive adds support for Nielsen watermark timezones.Aws\TranscribeService- Amazon Transcribe now supports role access for these API operations: CreateVocabulary, UpdateVocabulary, CreateVocabularyFilter, and UpdateVocabularyFilter.