use older version

Signed-off-by: Junpu Fan <junpu@amazon.com>

Author: junpuf

.github/workflows/pr-vllm-rayserve.yml

@@ -93,7 +93,7 @@ jobs:
         uses: actions/checkout@v5
         with:
           repository: vllm-project/vllm
-          ref: v0.11.1rc6
+          ref: v0.10.2
           path: vllm
 
       - name: Run vLLM Tests