Bump langchain-core from 0.3.80 to 0.3.81 in /EdgeCraftRAG/edgecraftrag (#2372)

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EdgeCraftRAG/edgecraftrag/requirements.txt

@@ -3,7 +3,7 @@ EbookLib>=0.18
 faiss-cpu>=1.8.0.post1
 html2text>=2025.4.15
 json-repair==0.52.0
-langchain-core==0.3.80
+langchain-core==0.3.81
 langchain-milvus
 langchain-openai
 langgraph==0.6.10