[Snyk] Security upgrade rack-contrib from 1.1.0 to 1.1.0#12

roru78 wants to merge 1 commit intomasterroru78/training-kit:masterfrom

snyk-fix-ba49babb761bc7a60910ba0db18c9d3eroru78/training-kit:snyk-fix-ba49babb761bc7a60910ba0db18c9d3eCopy head branch name to clipboard