Update confidential-vm-overview.md

Azure dedicated host support for DCasv5 is available - https://learn.microsoft.com/en-us/azure/virtual-machines/dedicated-host-general-purpose-skus#dcasv5

VMSS with OS disk encryption is supported 

Ultra disks are supported in the 12 available regions.

Author: linuxelf001

articles/confidential-computing/confidential-vm-overview.md

@@ -120,11 +120,8 @@ Confidential VMs *don't support*:
 - Azure Batch
 - Azure Backup
 - Azure Site Recovery
-- Azure Dedicated Host 
-- Microsoft Azure Virtual Machine Scale Sets with Confidential OS disk encryption enabled
 - Limited Azure Compute Gallery support
 - Shared disks
-- Ultra disks
 - Accelerated Networking
 - Live migration
 - Screenshots under boot diagnostics