[CI] Cancel whl build when submitting a new commit

[Potabk]

What this PR does / why we need it?

From a resource-saving perspective, canceling old jobs when submitting new commits can reduce github_hosted in queue

Does this PR introduce any user-facing change?

How was this patch tested?

• vLLM version: v0.12.0
• vLLM main: vllm-project/vllm@ad32e3e

[gemini-code-assist]

Note

Gemini is unable to generate a review for this pull request due to the file types involved not being currently supported.

[wangxiyuan]

This is important, can you rebase and fix it in quick?

[Potabk]

yes

[github-actions]

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