v12.64.0
[6.x] Alpha ordered imports (#29933)
[12.x] Run Mockery cleanup via PHPUnit subscriber instead of explicit `m::close()` calls (#58278)
Support 'afterSending' on notification (#58654)
[12.x] Fix cc/bcc/replyTo address merging in `MailMessage` (#55404)
[12.x] Preserve notification state mutations from via() in sendNow() (#58558)