Update rubocop requirement from ~> 1.16.0 to ~> 1.56.2#1942

dependabot[bot] wants to merge 1 commit intomainNexmo/station:mainfrom

dependabot/bundler/rubocop-tw-1.56.2Nexmo/station:dependabot/bundler/rubocop-tw-1.56.2Copy head branch name to clipboard