(04-21-26) Release Notes

Jira TicketDescription
CLOUD-2690Fixed a Java error in the webhook for an unsubscribed contact.
CLOUD-2704Made Charlie to be enabled/disabled based on a global config flag.
CLOUD-2611We now absorb any unused funding at the end of the month/leftover credits won't rollover into the following month.
CLOUD-2682Corrected rendering the SES configuration set.
EmailAdjustments to email builder UI.
AngularPending upgrade that is currently undergoing final testing.
CLOUD-2716Firebase config adjustments currently undergoing final testing.