[Security] Bump activerecord from 4.1.4 to 4.1.16#4

dependabot-preview[bot] wants to merge 1 commit intomastercatarse/zendesk_engine:masterfrom

dependabot/bundler/activerecord-4.1.16catarse/zendesk_engine:dependabot/bundler/activerecord-4.1.16Copy head branch name to clipboard