style(rubocop): Style/For

lib/postal/message_db/database.rb

@@ -333,7 +333,7 @@ module Postal
           id = Nifty::Utils::RandomString.generate(length: 6).upcase
           explain_result = ResultForExplainPrinter.new(connection.query("EXPLAIN #{query}"))
           slow_query_logger.info "[#{id}] EXPLAIN #{query}"
-          for line in ActiveRecord::ConnectionAdapters::MySQL::ExplainPrettyPrinter.new.pp(explain_result, time).split("\n")
+          ActiveRecord::ConnectionAdapters::MySQL::ExplainPrettyPrinter.new.pp(explain_result, time).split("\n").each do |line|
             slow_query_logger.info "[#{id}] " + line
           end
         end

lib/postal/user_creator.rb

@@ -23,7 +23,7 @@ module Postal
         puts "User has been created with e-mail address \e[32m#{user.email_address}\e[0m"
       else
         puts "\e[31mFailed to create user\e[0m"
-        for error in user.errors.full_messages
+        user.errors.full_messages.each do |error|
           puts " * #{error}"
         end
       end