[Snyk] Security upgrade alpine from 3.9 to 3.21.0#515

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G0dh wants to merge 1 commit intomasterfrom snyk-fix-435eb5f6d6591f7713f353a9187850a4

+2-2

Commits on Dec 12, 2024

fix: images/benchmarks/ruby/Dockerfile to reduce vulnerabilities
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