fix: update ALZ module version checks to use Get-InstalledPSResource (#465)

# Pull Request

## Issue

Issue #, if available:
https://github.com/Azure/ALZ-PowerShell-Module/issues/461

## Description

Description of changes:

This pull request updates the way the ALZ module is checked and
retrieved in the `Test-Tooling` function, modernizing the approach to
use the latest PowerShell resource management cmdlets for better
compatibility and reliability.

**Module management modernization:**

* Replaced `Get-InstalledModule` with `Get-InstalledPSResource` for
checking the installed ALZ module version, and updated the selection of
properties to include `Name` and `Version`.
* Replaced `Find-Module` with `Find-PSResource` for retrieving the
latest available ALZ module version.

## License

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

Signed-off-by: Jan Egil Ring <janegilring@microsoft.com>

Author: janegilring

src/ALZ/Private/Tools/Test-Tooling.ps1

@@ -160,15 +160,16 @@ function Test-Tooling {
     } else {
         # Check if latest ALZ module is installed
         Write-Verbose "Checking ALZ module version"
-        $alzModuleCurrentVersion = Get-InstalledModule -Name ALZ -ErrorAction SilentlyContinue
+        $alzModuleCurrentVersion = Get-InstalledPSResource -Name ALZ | Select-Object -Property Name, Version
+
         if($null -eq $alzModuleCurrentVersion) {
             $checkResults += @{
                 message = "ALZ module is not correctly installed. Please install the latest version using 'Install-Module ALZ'."
                 result  = "Failure"
             }
             $hasFailure = $true
         }
-        $alzModuleLatestVersion = Find-Module -Name ALZ
+        $alzModuleLatestVersion = Find-PSResource -Name ALZ
         if ($null -ne $alzModuleCurrentVersion) {
             if ($alzModuleCurrentVersion.Version -lt $alzModuleLatestVersion.Version) {
                 $checkResults += @{