Update requirements.txt

requirements.txt

@@ -3,11 +3,11 @@ selenium==4.20.0
 transformers==4.44.2
 sentence-transformers==3.1.1
 huggingface_hub==0.25.1
-langchain==0.1.17  # Downgraded to compatible version
-langchain-community==0.0.34  # Updated to compatible version
+langchain==0.3.27
+langchain-community==0.0.29
 faiss-cpu==1.7.4
 torch==2.2.0
 psutil==5.9.8
 accelerate==0.30.0
 protobuf==3.20.3
-langchain-core==0.1.68  # Added specific compatible version
+langchain-core==0.3.75  # Updated to a valid version