Prior to this change, The attachment URL sent from Chatwoot to 3rd party integrations like Whatsapp and Facebook involved a 301 redirect before the original content is served. This causes intermittent breakages for the sent attachments. fixes: #3632 ref: https://blog.saeloun.com/2021/09/14/rails-7-adds-expiring-urls-to-active-storage.html
Ability to send and receive MMS to bandwidth channel fixes: #3961
fixes: #3888