[ROCm] Enable bitsandbytes quantization support on ROCm (#34688)

Signed-off-by: badaoui <abdennacerbadaoui0@gmail.com>

docs/features/quantization/bnb.md

@@ -7,7 +7,7 @@ Compared to other quantization methods, BitsAndBytes eliminates the need for cal
 Below are the steps to utilize BitsAndBytes with vLLM.
 
 ```bash
-pip install bitsandbytes>=0.46.1
+pip install bitsandbytes>=0.49.2
 ```
 
 vLLM reads the model's config file and supports both in-flight quantization and pre-quantized checkpoint.