Fix RSpec/HookArgument cop (#27747)

spec/models/user_spec.rb

@@ -102,7 +102,7 @@ RSpec.describe User do
   end
 
   describe 'blacklist' do
-    around(:each) do |example|
+    around do |example|
       old_blacklist = Rails.configuration.x.email_blacklist
 
       Rails.configuration.x.email_domains_blacklist = 'mvrht.com'
@@ -169,7 +169,7 @@ RSpec.describe User do
       let(:user) { Fabricate(:user, confirmed_at: nil, unconfirmed_email: new_email) }
 
       context 'when the user is already approved' do
-        around(:example) do |example|
+        around do |example|
           registrations_mode = Setting.registrations_mode
           Setting.registrations_mode = 'approved'
 
@@ -193,7 +193,7 @@ RSpec.describe User do
       end
 
       context 'when the user does not require explicit approval' do
-        around(:example) do |example|
+        around do |example|
           registrations_mode = Setting.registrations_mode
           Setting.registrations_mode = 'open'
 
@@ -213,7 +213,7 @@ RSpec.describe User do
       end
 
       context 'when the user requires explicit approval but is not approved' do
-        around(:example) do |example|
+        around do |example|
           registrations_mode = Setting.registrations_mode
           Setting.registrations_mode = 'approved'
 
@@ -237,7 +237,7 @@ RSpec.describe User do
   describe '#approve!' do
     subject { user.approve! }
 
-    around(:example) do |example|
+    around do |example|
       registrations_mode = Setting.registrations_mode
       Setting.registrations_mode = 'approved'
 
@@ -338,7 +338,7 @@ RSpec.describe User do
   end
 
   describe 'whitelist' do
-    around(:each) do |example|
+    around do |example|
       old_whitelist = Rails.configuration.x.email_domains_whitelist
 
       Rails.configuration.x.email_domains_whitelist = 'mastodon.space'