[Snyk] Security upgrade alpine from 3.18.3 to 3.21.2#32

cruizen wants to merge 1 commit intomasterplatform9/dex:masterfrom

snyk-fix-7aae0cd6f611f6fb1a3475afb219b66cplatform9/dex:snyk-fix-7aae0cd6f611f6fb1a3475afb219b66cCopy head branch name to clipboard