[CI] Upgrade trasnformers version (#6307)

Upgrade transformers to >=4.56.4

- vLLM version: v0.14.1
- vLLM main:
dc917cceb8

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

tests/e2e/multicard/2-cards/test_quantization.py

@@ -16,7 +16,6 @@
 # This file is a part of the vllm-ascend project.
 # Adapted from vllm/tests/basic_correctness/test_basic_correctness.py
 #
-from modelscope import snapshot_download  # type: ignore
 import pytest
 
 from tests.e2e.conftest import VllmRunner
@@ -28,7 +27,7 @@ def test_qwen2_5_w8a8_external_quantized_tp2():
     ]
     max_tokens = 5
     with VllmRunner(
-            snapshot_download("neuralmagic/Qwen2.5-3B-quantized.w8a8"),
+            "neuralmagic/Qwen2.5-3B-quantized.w8a8",
             tensor_parallel_size=2,
             cudagraph_capture_sizes=[1, 2, 4, 8],
             max_model_len=4096,
@@ -52,8 +51,7 @@ def test_qwen3_moe_w8a8_dynamic_llm_compressor():
     ]
     max_tokens = 5
     with VllmRunner(
-            snapshot_download(
-                "vllm-ascend/Qwen3-30B-A3B-Instruct-2507-quantized.w8a8"),
+            "vllm-ascend/Qwen3-30B-A3B-Instruct-2507-quantized.w8a8",
             tensor_parallel_size=2,
             max_model_len=4096,
             gpu_memory_utilization=0.8,