chore: Increase the timeout to support slow SMTP servers (#10318)

Converting
https://github.com/chatwoot/chatwoot/issues/7802#issuecomment-2171005257
to a PR

Co-authored-by: Nickson Yap <hi@nickson.me>

app/mailers/conversation_reply_mailer_helper.rb

@@ -85,6 +85,8 @@ module ConversationReplyMailerHelper
       tls: false,
       enable_starttls_auto: true,
       openssl_verify_mode: 'none',
+      open_timeout: 15,
+      read_timeout: 15,
       authentication: 'xoauth2'
     }
   end