dev: update rubocop todo list

because some new rubocop-performance rules kicked in

.rubocop_todo.yml

@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2021-10-26 07:27:19 UTC using RuboCop version 1.22.2.
+# on 2022-01-03 20:31:05 UTC using RuboCop version 1.24.1.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -13,7 +13,7 @@ Lint/IneffectiveAccessModifier:
     - 'lib/nokogiri/html5/document.rb'
     - 'lib/nokogiri/xml/document.rb'
 
-# Offense count: 11
+# Offense count: 5
 Lint/MissingSuper:
   Exclude:
     - 'lib/nokogiri/html4/document_fragment.rb'
@@ -50,16 +50,24 @@ Performance/CollectionLiteralInLoop:
     - 'test/xml/test_dtd_encoding.rb'
     - 'test/xml/test_node_reparenting.rb'
 
+# Offense count: 11
+# Cop supports --auto-correct.
+Performance/StringIdentifierArgument:
+  Exclude:
+    - 'lib/nokogiri/html5.rb'
+    - 'test/html5/test_encoding.rb'
+    - 'test/test_css_cache.rb'
+    - 'test/test_memory_leak.rb'
+    - 'test/xml/test_builder.rb'
+
 # Offense count: 1
 # Cop supports --auto-correct.
-# Configuration parameters: AutoCorrect.
 Performance/StringInclude:
   Exclude:
     - 'lib/nokogiri/css/xpath_visitor.rb'
 
 # Offense count: 2
 # Cop supports --auto-correct.
-# Configuration parameters: AutoCorrect.
 Performance/TimesMap:
   Exclude:
     - 'test/html5/test_nokogumbo.rb'
@@ -82,7 +90,7 @@ Style/MissingRespondToMissing:
   Exclude:
     - 'lib/nokogiri/xml/builder.rb'
 
-# Offense count: 85
+# Offense count: 78
 # Cop supports --auto-correct.
 # Configuration parameters: AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, IgnoredPatterns.
 # URISchemes: http, https