Update requirements.txt

requirements.txt

@@ -1,6 +1,6 @@
-langchain=0.1.11
-gradio=5.23.2
-transformers=4.38.2 
-bs4=0.0.2
-requests=2.31.0
-torch=2.2.1
+langchain==0.1.11
+gradio==5.23.2
+transformers==4.38.2 
+bs4==0.0.2
+requests==2.31.0
+torch==2.2.1