[Snyk] Security upgrade alpine from 3.15.0 to 3.21.0#615

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ksatchit wants to merge 1 commit intomasterfrom snyk-fix-4f6ac4ef5a543edf1908aaabeb530b4b

+1-1

Commits on Dec 18, 2024

fix: custom/app-setup/kafka/Dockerfile to reduce vulnerabilities
snyk-bot
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