[Snyk] Security upgrade rack from 1.6.4 to 2.2.18#19

ppradnesh wants to merge 1 commit intomasterppradnesh/ruby-ex:masterfrom

snyk-fix-14ef5ddf6883321050b677a5cd11dd4eppradnesh/ruby-ex:snyk-fix-14ef5ddf6883321050b677a5cd11dd4eCopy head branch name to clipboard