ui-dev: bump rack from 2.2.8 to 2.2.9 in /server/src/main/webapp/WEB-INF/rails#3663

dependabot[bot] wants to merge 1 commit intomasterstackriot/gocd:masterfrom

dependabot/bundler/server/src/main/webapp/WEB-INF/rails/rack-2.2.9stackriot/gocd:dependabot/bundler/server/src/main/webapp/WEB-INF/rails/rack-2.2.9Copy head branch name to clipboard