langchain==1.2.9

Changes since langchain==1.2.8

fix(langchain): normalize raw schemas in middleware response_format override (#35019) feat: support state updates from wrap_model_call with command(s) (#35033) test(langchain): types in test_tool_call_limit and test_model_retry (#34629) fix(langchain): bump min core version and improve approximate token counting (#35026) release: langchain 1.2.9 (#35023) feat: threading context through create_agent flows + middleware (#34978) chore: add make type target (#35015) revert: "chore: add typing target in Makefile" (#35013) chore: add typing target in Makefile (#35012) revert: use usage metadata scaling in SummarizationMiddleware default token counter (#35002) fix(langchain): use usage metadata scaling in SummarizationMiddleware default token counter (#35001) fix(langchain): avoid UnboundLocalError when no AIMessage exists (#34816) chore: enrich pyproject.toml files (#34980)