Changes since langchain==0.3.8
langchain[patch]: Release 0.3.9 (#28399)
Init embeddings (#28370)
langchain[patch]: init_chat_model provider in model string (#28367)
langchain[patch]: update deprecation message for agent classes and constructors (#28369)
langchain: Fix Neo4jVector vector store reference from partner package for self query (#28292)
langchain[patch]: support numpy 2 (#28183)