Target the latest PowerShell LTS

Remove legacy Windows PowerShell compatibility paths from API transport and help-link validation.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: MariusStorhaug

src/functions/private/Invoke-DomeneshopApiRequest.ps1

@@ -62,14 +62,11 @@ function Invoke-DomeneshopApiRequest {
     )
 
     $params = @{
-        Method      = $Method
-        Uri         = $Uri
-        Credential  = $credential
-        ErrorAction = 'Stop'
-    }
-
-    if ($PSVersionTable.PSVersion.Major -ge 6) {
-        $params['Authentication'] = 'Basic'
+        Method         = $Method
+        Uri            = $Uri
+        Authentication = 'Basic'
+        Credential     = $credential
+        ErrorAction    = 'Stop'
     }
 
     if ($PSBoundParameters.ContainsKey('Body')) {

tests/PublicHelpLinks.Tests.ps1

@@ -13,9 +13,8 @@ $publicFunctionsPath = Join-Path -Path $publicFunctionsPath -ChildPath 'public'
 $testCases = Get-ChildItem -Path $publicFunctionsPath -Filter '*.ps1' -Recurse -File |
     Sort-Object -Property FullName |
     ForEach-Object {
-        $relativeDirectory = $_.DirectoryName.Remove(0, $publicFunctionsPath.Length).TrimStart(
-            [char[]] @([IO.Path]::DirectorySeparatorChar, [IO.Path]::AltDirectorySeparatorChar)
-        )
+        $relativePath = [IO.Path]::GetRelativePath($publicFunctionsPath, $_.FullName)
+        $relativeDirectory = Split-Path -Path $relativePath -Parent
         $documentationPath = if ($relativeDirectory) {
             '{0}/{1}' -f ($relativeDirectory -replace '[\\/]', '/'), $_.BaseName
         } else {