[Snyk] Security upgrade debian from 9.5-slim to 9-slim#235

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Dmarch28 wants to merge 1 commit intomainfrom

snyk-fix-2c5b41ef469501c48801e9785f7c190d

Commits on May 15, 2022

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