Update requirements.txt

requirements.txt

@@ -1,15 +1,15 @@
 numpy<2.0.0
 torch==2.1.0
-transformers==4.35.0
+transformers==4.21.0
 sentence_transformers==2.2.2
 langchain==0.0.333
 langchain_community
 faiss-gpu==1.7.2
-accelerate==0.24.1
+accelerate==0.20.3
 bitsandbytes==0.41.2.post2
 einops==0.7.0
 xformers==0.0.22.post7
-gradio==4.1.2
+gradio==3.50.0
 huggingface_hub==0.15.1