Bump rack from 1.6.4 to 1.6.13 in /flipped-demos/ch07-bdd-cucumber/students#111

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

dependabot/bundler/flipped-demos/ch07-bdd-cucumber/students/rack-1.6.13saasbook/courseware:dependabot/bundler/flipped-demos/ch07-bdd-cucumber/students/rack-1.6.13Copy head branch name to clipboard