[ez][CI] Run vllm workflow on vllm pin updates (pytorch#163353)

As in title

The auto pin update was merged without running vllm workflow
Pull Request resolved: pytorch#163353
Approved by: https://github.com/malfet, https://github.com/wdvr

Author: clee2000

.github/labeler.yml

@@ -130,3 +130,6 @@
 - torch/csrc/inductor/aoti_include/**
 - torchgen/aoti/**
 - torchgen/gen_aoti_c_shim.py
+
+"ciflow/vllm":
+- .github/ci_commit_pins/vllm.txt