langchain

cfe13f67 - Merge branch 'master' into wip-v0.4

Merge branch 'master' into wip-v0.4 # Conflicts: # libs/core/langchain_core/version.py # libs/core/pyproject.toml # libs/core/uv.lock # libs/partners/openai/tests/integration_tests/chat_models/test_responses_api.py # libs/partners/openai/uv.lock