style(rubocop): fix all safe auto correctable offenses

script/insert-bounce.rb

@@ -10,23 +10,23 @@ if ARGV[0].nil? || ARGV[1].nil?
   exit 1
 end
 
-require_relative '../config/environment'
+require_relative "../config/environment"
 
 server = Server.find(ARGV[0])
 puts "Got server #{server.name}"
 
-template = File.read(Rails.root.join('resource/postfix-bounce.msg'))
+template = File.read(Rails.root.join("resource/postfix-bounce.msg"))
 
 if ARGV[1].to_s =~ /\A(\d+)\z/
   message = server.message_db.message(ARGV[1].to_i)
   puts "Got message #{message.id} with token #{message.token}"
-  template.gsub!('{{MSGID}}', message.token)
+  template.gsub!("{{MSGID}}", message.token)
 else
-  template.gsub!('{{MSGID}}', ARGV[1].to_s)
+  template.gsub!("{{MSGID}}", ARGV[1].to_s)
 end
 
 message = server.message_db.new_message
-message.scope = 'incoming'
+message.scope = "incoming"
 message.rcpt_to = "#{server.token}@#{Postal.config.dns.return_path}"
 message.mail_from = "MAILER-DAEMON@smtp.infra.atech.io"
 message.raw_message = template