Update generated code (#1874)

* update generated code

* Apply suggestions from code review

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Co-authored-by: Jérémy Derussé <[email protected]>

Author: async-aws-bot

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Added
 
 - AWS api-change: New options for how to handle harmful content detected by Amazon Bedrock Guardrails.
+- AWS api-change: This release introduces our latest bedrock runtime API, InvokeModelWithBidirectionalStream. The API supports both input and output streams and is supported by only HTTP2.0.
 
 ### Changed