Update requirements.txt

requirements.txt

@@ -1,8 +1,10 @@
-langchain==0.0.346
-pypdf==3.17.0
-sentence-transformers==2.2.2
+langchain==0.1.5
+pypdf==4.1.0
+sentence-transformers==2.3.1
 faiss-cpu==1.7.4
-transformers==4.34.0
-accelerate==0.23.0
-gradio==3.44.0
-bitsandbytes==0.41.1
+transformers==4.38.2
+accelerate==0.27.2
+gradio==4.19.2
+bitsandbytes==0.42.0
+huggingface-hub==0.20.3
+python-dotenv==1.0.1