Changes since langchain-openai==0.1.23
fmt
standard-tests[patch]: add Ser/Des test
langchain_openai: Make sure the response from the async client in the astream method of ChatOpenAI is properly awaited in case of "include_response_headers=True" (#26031)
openai[patch]: add back azure embeddings api_version alias
openai[patch]: Upgrade @root_validators in preparation for pydantic 2 migration (#25491)
standard-tests[patch]: test init from env vars (#25983)
docs: ChatOpenAI.with_structured_output nits (#25952)
langchain_openai: Cleanup OpenAIEmbeddings validate_environment. (#25855)