build(deps-dev): bump mini-css-extract-plugin from 1.3.5 to 1.3.8 in /frontend#800

dependabot[bot] wants to merge 1 commit intomastermozilla/code-coverage:masterfrom

dependabot/npm_and_yarn/frontend/mini-css-extract-plugin-1.3.8mozilla/code-coverage:dependabot/npm_and_yarn/frontend/mini-css-extract-plugin-1.3.8Copy head branch name to clipboard