Changes since langchain-openai==1.1.6
release(openai): 1.1.7 (#34640)
fix(openai): raise proper exception OpenAIRefusalError on structured output refusal (#34619)
fix: handle empty assistant content in Responses API (#34272) (#34296)
fix(core): serialization patch (#34455)
fix(openai): handle function_call content in token counting (#34379)
fix(openai): filter function_call blocks in token counting (#34396)