Bump gulp from 3.9.1 to 4.0.2 in /css/css-writing-modes/tools/generators#2364

dependabot[bot] wants to merge 1 commit intomastertkntjsdw/wpt:masterfrom

dependabot/npm_and_yarn/css/css-writing-modes/tools/generators/gulp-4.0.2tkntjsdw/wpt:dependabot/npm_and_yarn/css/css-writing-modes/tools/generators/gulp-4.0.2Copy head branch name to clipboard