Changes since langchain-openai==0.1.20
openai[patch]: Release 0.1.21rc2 (#25146)
openai[patch]: ChatOpenAI.with_structured_output json_schema support (#25123)
openai[patch]: Release 0.1.21rc1 (#25116)
core[patch], openai[patch]: enable strict tool calling (#25111)
patch[Partners] Unified fix of incorrect variable declarations in all check_imports (#25014)