Ensure Let's Encrypt certificates work

scripts/Windows/Software/Nextcloud/Manage.ps1

@@ -6,6 +6,8 @@ $null = New-Module {
             choco install nextcloud-client -y --params="'/KeepUpdateCheck'";
         }
 
+        $null = Invoke-WebRequest https://valid-isrgrootx1.letsencrypt.org/;
+
         while (-not (Test-Path $context.GetNextcloudConfigFile())) {
             Write-Host "Nextcloud has been installed!";
             Read-Host "Please log in in the Nextcloud app and hit enter to continue";