fix: adjust grep command

[sofa-tata]

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[cursor]

PR Summary

Low Risk
Low risk: a small CI workflow tweak that only affects how release tags are selected, with no runtime code changes.

Overview
Updates .github/workflows/auto-release.yml to change the grep invocation used when finding the latest stable vX.Y.Z tag, switching from grep -vE '-(beta|alpha|rc)' to multiple -e patterns (-beta, -alpha, -rc) to exclude pre-release tags more reliably.

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