Changes since langchain==1.4.2
release(langchain): 1.4.3 (#40888)
fix(langchain): sanitize cache settings for fallback models (#40886)
feat(langchain): support Bedrock Mantle chat models in init_chat_model (#40837)
fix(langchain): recognize GPT-6 structured output without profiles (#40844)
docs(infra): fix AGENTS.md root setup guidance and package doc accuracy (#40794)
fix(langchain): repair invalid tool calls in create_agent (#40530)
chore(langchain): remove commented-out cohere extra (#40713)
chore(deps): bump anyio from 4.11.0 to 4.14.2 in /libs/langchain_v1 (#40626)