build(deps-dev): bump mini-css-extract-plugin from 1.3.5 to 1.3.9 in /frontend#816

marco-c merged 1 commit intomastermozilla/code-coverage:masterfrom

dependabot/npm_and_yarn/frontend/mini-css-extract-plugin-1.3.9mozilla/code-coverage:dependabot/npm_and_yarn/frontend/mini-css-extract-plugin-1.3.9Copy head branch name to clipboard