[Misc] Limit ray version (#3660)

We notice that with ray>2.48.0, the npu card count is not correct from
ray. This is a know bug. Let's limit ray version to <2.48.0 now.

- vLLM version: v0.11.0rc3
- vLLM main: https://github.com/vllm-project/vllm/commit/v0.11.0

Signed-off-by: wangxiyuan <wangxiyuan1007@gmail.com>

requirements-dev.txt

@@ -13,8 +13,8 @@ types-psutil
 pytest-cov
 regex
 sentence_transformers
-ray>=2.47.1
+ray>=2.47.1,<=2.48.0
 protobuf>3.20.0
 librosa 
 soundfile
-pytest_mock
+pytest_mock