Fix rails version comparision

Author: oscartzgz

app/mailers/policy_manager/application_mailer.rb

@@ -6,7 +6,7 @@ class ApplicationMailer < ActionMailer::Base
     # configurable mailer helpers
     if Config.exporter.present?
       Config.exporter.mail_helpers.each do |helpers|
-        if Rails::VERSION::MAJOR > 6 && Rails::VERSION::MINOR > 0
+        if Rails::VERSION::MAJOR >= 6 && Rails::VERSION::MINOR > 0
           helper(helpers)
         else
           add_template_helper(helpers)