[Snyk] Security upgrade ruby from 2.1 to 2.7.6#1

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-7c46db021300a24b551b016406e4f89c

+1-1

Commits on May 2, 2023

fix: 2.1/onbuild/Dockerfile to reduce vulnerabilities
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