Bump yaml, cssnano, postcss-loader and stylelint#45

dependabot[bot] wants to merge 1 commit into

mainflickerbox/build:mainfrom

dependabot/npm_and_yarn/yaml-and-cssnano-and-postcss-loader-and-stylelint--removedflickerbox/build:dependabot/npm_and_yarn/yaml-and-cssnano-and-postcss-loader-and-stylelint--removedCopy head branch name to clipboard