Use latest version of VS BuildTools

When one or more versions of VS Build tools are installed the script
.\winmake.ps1 installer does not finish with error.

...
Done!
Invoke-Expression: C:\...\podman\contrib\cirrus\win-lib.ps1:101:5
Line |
 101 |      Invoke-Expression $command -OutVariable unformattedLog | Write-Output
     |      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     | Cannot process argument transformation on parameter 'vsinstance'. Cannot convert the "System.Object[]" value of type "System.Object[]" to type
     | "Microsoft.VisualStudio.Setup.Instance".

Signed-off-by: Nicola Sella <[email protected]>

contrib/win-installer/build-hooks.ps1

@@ -17,7 +17,7 @@ function Build-MSIHooks {
     if ( Get-MingW ) {
         Build-MSIHooks-Using-MingW $msiHooksFolder $artifactsFolder
     } elseif ( Get-VSBuildTools ) {
-        $vsinstance = Get-VSSetupInstance | Select-VSSetupInstance -Product  Microsoft.VisualStudio.Product.BuildTools
+        $vsinstance = Get-VSSetupInstance | Select-VSSetupInstance -Product  Microsoft.VisualStudio.Product.BuildTools -Latest
         Build-MSIHooks-Using-VSBuildTools $msiHooksFolder $artifactsFolder $vsinstance
     } else {
         $msg = "A C/C++ compiler is required to build `"$msiHooksFolder\check.c`". "