Bump rack from 2.2.4 to 2.2.8.1 in /flipped-demos/ch03-saas/ttt#110

dependabot[bot] wants to merge 1 commit intomainsaasbook/courseware:mainfrom

dependabot/bundler/flipped-demos/ch03-saas/ttt/rack-2.2.8.1saasbook/courseware:dependabot/bundler/flipped-demos/ch03-saas/ttt/rack-2.2.8.1Copy head branch name to clipboard