Litellm stable dev (#5711)

* feat(aws_base_llm.py): prevents recreating boto3 credentials during high traffic

Leads to 100ms perf boost in local testing

* fix(base_aws_llm.py): fix credential caching check to see if token is set

* refactor(bedrock/chat): separate converse api and invoke api + isolate converse api transformation logic

Make it easier to see how requests are transformed for /converse

* fix: fix imports

* fix(bedrock/embed): fix reordering of headers

* fix(base_aws_llm.py): fix get credential logic

* fix(converse_handler.py): fix ai21 streaming response

litellm/main.py

@@ -2385,6 +2385,7 @@ def completion(
                     )
 
             if model in litellm.BEDROCK_CONVERSE_MODELS:
+
                 response = bedrock_converse_chat_completion.completion(
                     model=model,
                     messages=messages,
@@ -3570,7 +3571,7 @@ def embedding(
                 client=client,
                 timeout=timeout,
                 aembedding=aembedding,
-                litellm_params=litellm_params,
+                litellm_params={},
                 api_base=api_base,
                 print_verbose=print_verbose,
                 extra_headers=extra_headers,