Bump shoulda-matchers from 5.3.0 to 6.5.0#5

dependabot[bot] wants to merge 1 commit intomasteriteratorpm/iterator:masterfrom

dependabot/bundler/shoulda-matchers-6.5.0iteratorpm/iterator:dependabot/bundler/shoulda-matchers-6.5.0Copy head branch name to clipboard