Fix RSpec/AnyInstance

Regenerate Rubocop's todo

.rubocop_todo.yml

@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2024-06-22 17:26:10 UTC using RuboCop version 1.64.1.
+# on 2024-07-23 11:24:53 UTC using RuboCop version 1.64.1.
 # 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
@@ -37,12 +37,6 @@ Naming/VariableNumber:
     - 'spec/grape/exceptions/validation_errors_spec.rb'
     - 'spec/grape/validations_spec.rb'
 
-# Offense count: 2
-RSpec/AnyInstance:
-  Exclude:
-    - 'spec/grape/api_spec.rb'
-    - 'spec/grape/middleware/base_spec.rb'
-
 # Offense count: 1
 # Configuration parameters: IgnoredMetadata.
 RSpec/DescribeClass:
@@ -140,15 +134,14 @@ RSpec/RepeatedExampleGroupDescription:
     - 'spec/grape/util/inheritable_setting_spec.rb'
     - 'spec/grape/validations/validators/values_spec.rb'
 
-# Offense count: 5
+# Offense count: 4
 RSpec/StubbedMock:
   Exclude:
     - 'spec/grape/dsl/inside_route_spec.rb'
     - 'spec/grape/dsl/routing_spec.rb'
     - 'spec/grape/middleware/formatter_spec.rb'
-    - 'spec/grape/parser_spec.rb'
 
-# Offense count: 122
+# Offense count: 121
 RSpec/SubjectStub:
   Exclude:
     - 'spec/grape/api_spec.rb'
@@ -164,7 +157,6 @@ RSpec/SubjectStub:
     - 'spec/grape/middleware/formatter_spec.rb'
     - 'spec/grape/middleware/globals_spec.rb'
     - 'spec/grape/middleware/stack_spec.rb'
-    - 'spec/grape/parser_spec.rb'
 
 # Offense count: 23
 # Configuration parameters: IgnoreNameless, IgnoreSymbolicNames.

spec/grape/middleware/base_spec.rb

@@ -57,7 +57,7 @@
     context 'with patched warnings' do
       before do
         @warnings = warnings = []
-        allow_any_instance_of(described_class).to receive(:warn) { |m| warnings << m }
+        allow(subject).to receive(:warn) { |m| warnings << m }
         allow(subject).to receive(:after).and_raise(StandardError)
       end