[Misc] Upgrade vllm vllm commit to 2025_12_04 (#4690)

### What this PR does / why we need it?
As title shows, upgrade vllm commit hash to `ad32e3e`

- vLLM version: v0.12.0

---------

Signed-off-by: wangli <wangli858794774@gmail.com>
Co-authored-by: wangxiyuan <wangxiyuan1007@gmail.com>

.github/workflows/format_pr_body.yaml

@@ -36,7 +36,7 @@ jobs:
 
       - name: Get vLLM version
         run: |
-          VLLM_COMMIT=v0.12.0
+          VLLM_COMMIT=ad32e3e19ccf0526cb6744a5fed09a138a5fb2f9
           echo "VLLM_COMMIT=https://github.com/vllm-project/vllm/commit/$VLLM_COMMIT" >> $GITHUB_ENV
 
       - name: Checkout repository