Update requirements.txt to upgrade transformers and add vllm dependency

requirements.txt

@@ -9,7 +9,8 @@ python-multipart==0.0.9
 
 # For model handling
 torch==2.2.0
-transformers==4.37.2
+transformers==4.43.1
+vllm==0.5.3.post1
 accelerate==0.27.2
 
 # Optional but recommended for performance