Bump rack from 2.2.18 to 2.2.20 in /benchmarks/shipit#424

dependabot[bot] wants to merge 1 commit into

mainruby/ruby-bench:mainfrom

dependabot/bundler/benchmarks/shipit/rack-2.2.20ruby/ruby-bench:dependabot/bundler/benchmarks/shipit/rack-2.2.20Copy head branch name to clipboard