Bump rack from 2.2.3 to 2.2.6.2 in /backend#83

dependabot[bot] wants to merge 1 commit intomasterradar/twist-v2:masterfrom

dependabot/bundler/backend/rack-2.2.6.2radar/twist-v2:dependabot/bundler/backend/rack-2.2.6.2Copy head branch name to clipboard