Updates rubocop-perf

spec/app/controllers/core_spec.rb

@@ -52,9 +52,10 @@ describe WPScan::Controller::Core do
       %i[apache iis nginx].each do |server|
         context "when #{server}" do
           let(:cli_args) { "#{super()} --server #{server}" }
+          let(:servers)  { [:Apache, nil, :IIS, :Nginx] }
 
           it "loads the #{server.capitalize} module and returns :#{server}" do
-            @stubbed_server = [:Apache, nil, :IIS, :Nginx].sample
+            @stubbed_server = servers.sample
             @expected       = server == :iis ? :IIS : server.to_s.camelize.to_sym
           end
         end

spec/lib/target_spec.rb

@@ -38,8 +38,10 @@ describe WPScan::Target do
 
   %i[wp_version main_theme plugins themes timthumbs config_backups db_exports medias users].each do |method|
     describe "##{method}" do
+      let(:methods) { %i[wp_version main_theme] }
+
       before do
-        return_value = %i[wp_version main_theme].include?(method) ? false : []
+        return_value = methods.include?(method) ? false : []
 
         expect(WPScan::Finders.const_get("#{method.to_s.camelize}::Base"))
           .to receive(:find).with(target, opts).and_return(return_value)

wpscan.gemspec

@@ -29,7 +29,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rspec',               '~> 3.9.0'
   s.add_development_dependency 'rspec-its',           '~> 1.3.0'
   s.add_development_dependency 'rubocop',             '~> 0.90.0'
-  s.add_development_dependency 'rubocop-performance', '~> 1.7.0'
+  s.add_development_dependency 'rubocop-performance', '~> 1.8.0'
   s.add_development_dependency 'simplecov',           '~> 0.19.0'
   s.add_development_dependency 'simplecov-lcov',      '~> 0.8.0'
   s.add_development_dependency 'stackprof',           '~> 0.2.12'