fix: az powershell dependency (#339)

# Pull Request

## Description

Move the dependency on AZ PowerShell to only be in the function that
needs it.

## License

By submitting this pull request, I confirm that my contribution is made
under the terms of the projects associated license.

Author: jaredfholgate

src/ALZ/ALZ.psd1

@@ -53,16 +53,7 @@
     # ProcessorArchitecture = ''
 
     # Modules that must be imported into the global environment prior to importing this module
-    RequiredModules      = @(
-        @{
-            ModuleName    = 'Az.Accounts'
-            ModuleVersion = '2.10.4'
-        },
-        @{
-            ModuleName    = 'Az.Resources'
-            ModuleVersion = '6.5.0'
-        }
-    )
+    RequiredModules      = @()
 
     # Assemblies that must be loaded prior to importing this module
     # RequiredAssemblies = @()

src/ALZ/Public/Invoke-EABillingSPNPermissionsSetup.ps1

@@ -34,6 +34,8 @@ Creates a new SPN, or uses an existing SPN/MI, and assigns it the 'SubscriptionC
 
     # Check for pre-reqs
     #Requires -PSEdition Core
+    #Requires -Modules @{ ModuleName="Az.Accounts"; ModuleVersion="2.10.4" }
+    #Requires -Modules @{ ModuleName="Az.Resources"; ModuleVersion="6.5.0" }
 
     [CmdletBinding(DefaultParameterSetName = "Default")]
     param (