[Snyk] Security upgrade activeadmin from 0.5.1 to 0.6.0#21

orsagie wants to merge 1 commit intomasterorsagie/ruby-strict-version:masterfrom

snyk-fix-207fea7216d8ea109152e1f99c8ec7eborsagie/ruby-strict-version:snyk-fix-207fea7216d8ea109152e1f99c8ec7ebCopy head branch name to clipboard