Skip benchmarks/** in vllm ascend test (#1041)

### What this PR does / why we need it?
Skip benchmarks/** in vllm ascend test to reduce CI cost

### Does this PR introduce _any_ user-facing change?
No

### How was this patch tested?
CI passed

Signed-off-by: Yikun Jiang <yikunkero@gmail.com>

Author: Yikun

.github/workflows/vllm_ascend_test.yaml

@@ -30,6 +30,7 @@ on:
       - '.github/workflows/vllm_ascend_test.yaml'
       - '!docs/**'
       - 'pytest.ini'
+      - '!benchmarks/**'
 # Bash shells do not use ~/.profile or ~/.bashrc so these shells need to be explicitly
 # declared as "shell: bash -el {0}" on steps that need to be properly activated.
 # It's used to activate ascend-toolkit environment variables.