Fix RSpec/LetSetup cop in spec/controllers/admin area (#27619)

spec/controllers/admin/action_logs_controller_spec.rb

@@ -8,8 +8,8 @@ describe Admin::ActionLogsController do
   # Action logs typically cause issues when their targets are not in the database
   let!(:account) { Fabricate(:account) }
 
-  let!(:orphaned_logs) do
-    %w(
+  before do
+    _orphaned_logs = %w(
       Account User UserRole Report DomainBlock DomainAllow
       EmailDomainBlock UnavailableDomain Status AccountWarning
       Announcement IpBlock Instance CustomEmoji CanonicalEmailBlock Appeal