.rubocop.yml in hyrax-2.1.0 vs .rubocop.yml in hyrax-2.2.0

@@ -2,11 +2,11 @@
   bixby: bixby_default.yml
 
 inherit_from: .rubocop_fixme.yml
 
 AllCops:
-  TargetRubyVersion: 2.1
+  TargetRubyVersion: 2.3
   DisplayCopNames: true
   Exclude:
     - 'db/**/*'
     - 'script/**/*'
     - 'spec/test_app_templates/**/*'
@@ -44,9 +44,16 @@
     collect: 'map'
     collect!: 'map!'
     inject: 'reduce'
     detect: 'find'
     find_all: 'select'
+
+# disable frozen string literal comment. We can't safely introduce this
+# system-wide until a major version because it freezes strings that downstream
+# users might be mutating. Please use the frozen string literal pragma on new
+# files
+Style/FrozenStringLiteralComment:
+  Enabled: false
 
 Style/MethodMissing:
   Exclude:
     - 'app/models/concerns/hyrax/file_set/characterization.rb'