Az.Sql v6.6.0-preview

https://www.powershellgallery.com/packages/Az.Sql/6.6.0-preview

• Added support for User Assigned Managed Identity (UAMI) authentication in Data Sync cmdlets (New-AzSqlSyncGroup, Update-AzSqlSyncGroup, New-AzSqlSyncMember, Update-AzSqlSyncMember)