Update requirements.txt

requirements.txt

@@ -14,11 +14,11 @@ sentence-transformers
 safetensors==0.4.2
 
 # LangChain Ecosystem
-langchain==0.0.354
-langchain-core
-langchain-groq
-langchain-experimental
-langchain-community
+langchain==0.3.27
+langchain-core==0.3.74
+langchain-groq==0.3.7
+langchain-experimental==0.3.51
+langchain-community==0.3.27
 
 # Vector Stores & Retrievers
 faiss-cpu