Aws\AppSync- Documented the new OpenSearchServiceDataSourceConfig data type. Added deprecation notes to the ElasticsearchDataSourceConfig data type.Aws\MediaConvert- This release adds style and positioning support for caption or subtitle burn-in from rich text sources such as TTML. This release also introduces configurable image-based trick play track generation.Aws\SSM- Added cutoff behavior support for preventing new task invocations from starting when the maintenance window cutoff time is reached.