[Snyk] Security upgrade debian from 9.5-slim to stretch-20220228-slim#104

Open

snyk-bot wants to merge 1 commit intomainfrom snyk-fix-8f3696d7780c4827c3cfccc068060bba

+1-1

Commits on Mar 19, 2022

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