Add Microsoft.SqlServer.Dac.Extensions to module imports

Included 'Microsoft.SqlServer.Dac.Extensions' in the list of imported assemblies for both Windows and Core editions. Also updated the module version to 2025.12.21.

Author: potatoqualitee

dbatools.library.psd1

@@ -7,7 +7,7 @@
 #
 @{
     # Version number of this module.
-    ModuleVersion          = '2025.11.29'
+    ModuleVersion          = '2025.12.21'
 
     # ID used to uniquely identify this module
     GUID                   = '00b61a37-6c36-40d8-8865-ac0180288c84'

dbatools.library.psm1

@@ -113,6 +113,7 @@ if ($PSVersionTable.PSEdition -eq "Core") {
         'Azure.Identity',
         'Microsoft.IdentityModel.Abstractions',
         'Microsoft.SqlServer.Dac',
+        'Microsoft.SqlServer.Dac.Extensions',
         'Microsoft.SqlServer.Smo',
         'Microsoft.SqlServer.SmoExtended',
         'Microsoft.SqlServer.SqlWmiManagement',
@@ -130,6 +131,7 @@ if ($PSVersionTable.PSEdition -eq "Core") {
         'Microsoft.IdentityModel.Abstractions',
         'Microsoft.Data.SqlClient',
         'Microsoft.SqlServer.Dac',
+        'Microsoft.SqlServer.Dac.Extensions',
         'Microsoft.SqlServer.Smo',
         'Microsoft.SqlServer.SmoExtended',
         'Microsoft.SqlServer.SqlWmiManagement',