Merge branch 'fix/migration' into 'master'

Fix migration: if no cop existing, don't update 20230921093701_copbot_email.decidim_spam_signal.rb

See merge request !26

db/migrate/20230921093701_copbot_email.decidim_spam_signal.rb

@@ -5,9 +5,11 @@ class CopbotEmail < ActiveRecord::Migration[5.2]
   def change
     # bot email should never be bot@decidim.org
     cop = Decidim::User.where(nickname: "bot").first
+    if cop
        cop.email = ENV.fetch("USER_BOT_EMAIL", "bot@example.org")
        cop.skip_confirmation!
       cop.save
+    end
     Decidim::User.where(email: "bot@decidim.org").each do |legacy_bot|
       Decidim::UserReport.where(user: legacy_bot).update(user: cop)
       legacy_bot.destroy