[Snyk] Security upgrade debian from 9.5-slim to 9.13-slim#175

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snyk-bot wants to merge 1 commit intomasterfrom snyk-fix-13ad9d923a15eb9c4d6d8e88dc3db7d5

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Commits on May 3, 2022

fix: content/actions/creating-actions/dockerfile-support-for-github-actions.md to reduce vulnerabilities
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