Pin version for setup-qemu-action

[Amar3tto]

Please add a meaningful description for your change here

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[gemini-code-assist]

Note

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

[Abacn]

Triggered https://github.com/apache/beam/actions/runs/23458693132, LGTM

[damccorm]

Thanks!