.rubocop.yml in active_object-5.8.11 vs .rubocop.yml in active_object-5.9.0

@@ -1,8 +1,9 @@
+require: rubocop-performance
 AllCops:
   DisplayCopNames: true
   DisplayStyleGuide: true
-  TargetRubyVersion: 2.5
+  TargetRubyVersion: 2.6
   Exclude:
     - 'spec/**/**/*'
 Performance/RegexpMatch:
   Enabled: false
 Layout/EmptyLinesAroundClassBody: