Update requirements.txt

requirements.txt

@@ -1,12 +1,10 @@
-PyMuPDF==1.23.17
-gradio==4.11.0      
-langchain==0.0.321  
-Pillow==10.1.0      
-torch==2.1.1        
-transformers==4.35.2
-PyYAML==6.0.1
-chromadb==0.4.15
-pypdf==4.0.0
-Jinja2==3.1.3
-accelerate==0.26.1
-sentence-transformers==2.2.2
+pip==23.1.2
+langchain>=0.0.101
+langchain-community>=0.0.101
+langchain-openai>=0.0.101
+gradio>=3.0.5
+PyMuPDF>=1.19.6
+python-dotenv>=1.0.0
+transformers>=4.29.0
+datasets>=2.10.0
+huggingface_hub>=0.12.0