Bump mlaunch. (#20572)

New commits in xamarin/maccore:

* xamarin/maccore@7dbab91212 [mlaunch] Bump to .NET 8.
* xamarin/maccore@79ae2e4e7e [Mlaunch] Create Vulcan ready files of mlaunch.
* xamarin/maccore@f8f70b23a4 [mlaunch] List devices as they're found in --listdev.

Diff: 39a7e52166..7dbab91212

mk/xamarin.mk

@@ -18,7 +18,7 @@ endif
 
 # Available versions can be seen here:
 # https://dev.azure.com/dnceng/public/_artifacts/feed/dotnet-eng/NuGet/Microsoft.Tools.Mlaunch/versions
-MLAUNCH_NUGET_VERSION=1.0.95
+MLAUNCH_NUGET_VERSION=1.0.142
 
 define CheckVersionTemplate
 check-$(1)::