Add missing email previews for `AdminMailer` (#28044)

spec/mailers/previews/admin_mailer_preview.rb

@@ -3,6 +3,16 @@
 # Preview all emails at http://localhost:3000/rails/mailers/admin_mailer
 
 class AdminMailerPreview < ActionMailer::Preview
+  # Preview this email at http://localhost:3000/rails/mailers/admin_mailer/new_report
+  def new_report
+    AdminMailer.with(recipient: Account.first).new_report(Report.first)
+  end
+
+  # Preview this email at http://localhost:3000/rails/mailers/admin_mailer/new_appeal
+  def new_appeal
+    AdminMailer.with(recipient: Account.first).new_appeal(Appeal.first)
+  end
+
   # Preview this email at http://localhost:3000/rails/mailers/admin_mailer/new_pending_account
   def new_pending_account
     AdminMailer.with(recipient: Account.first).new_pending_account(User.pending.first)
@@ -13,8 +23,13 @@ class AdminMailerPreview < ActionMailer::Preview
     AdminMailer.with(recipient: Account.first).new_trends(PreviewCard.joins(:trend).limit(3), Tag.limit(3), Status.joins(:trend).where(reblog_of_id: nil).limit(3))
   end
 
-  # Preview this email at http://localhost:3000/rails/mailers/admin_mailer/new_appeal
-  def new_appeal
-    AdminMailer.with(recipient: Account.first).new_appeal(Appeal.first)
+  # Preview this email at http://localhost:3000/rails/mailers/admin_mailer/new_software_updates
+  def new_software_updates
+    AdminMailer.with(recipient: Account.first).new_software_updates
+  end
+
+  # Preview this email at http://localhost:3000/rails/mailers/admin_mailer/new_critical_software_updates
+  def new_critical_software_updates
+    AdminMailer.with(recipient: Account.first).new_critical_software_updates
   end
 end