langchain-openai==0.4.0.dev0

Changes since langchain-openai==0.3.28

chore: increment versions for 0.4 branch (#32419)
feat: standard outputs (#32287)
chore(openai): bump openai sdk (#32322)
fix(openai): add max_retries parameter to ChatOpenAI for handling 503 capacity errors (#32286)
fix: formatting issues in docstrings (#32265)
feat(docs): improve devx, fix Makefile targets (#32237)
fix: LLM mimicking Unicode responses due to forced Unicode conversion of non-ASCII characters. (#32222)
fix(docs): capitalization, codeblock formatting, and hyperlinks, note blocks (#32235)
docs(openai): add comprehensive documentation and examples for extra_body + others (#32149)