Update requirements.txt

requirements.txt

@@ -1,5 +1,5 @@
-gradio==4.19.2
-openai==1.55.3
-requests==2.31.0
-python-dotenv==1.0.0
-httpx==0.27.2
+aiohttp>=3.8.0
+gradio>=4.0.0
+openai>=1.0.0
+tenacity>=8.0.0
+python-dotenv>=1.0.0