mautil requires .net 6.0

[hyenaheartbeats]

When running mautil pack, I get the error:

You must install or update .NET to run this application.

App: /home/kali/.dotnet/tools/mautil
Architecture: x64
Framework: 'Microsoft.NETCore.App', version '6.0.0' (x64)
.NET location: /usr/lib64/dotnet

The following frameworks were found:
  8.0.15 at [/usr/lib64/dotnet/shared/Microsoft.NETCore.App]

Learn more:
https://aka.ms/dotnet/app-launch-failed

To install missing framework, download:
https://aka.ms/dotnet-core-applaunch?framework=Microsoft.NETCore.App&framework_version=6.0.0&arch=x64&rid=fedora.41-x64&os=fedora.41

It requires 6.0. However, everything below 8.0 is unsupported on my system.

[hyenaheartbeats]

Corrected by installing the binaries manually

[cameronwhite]

Hmm, I hadn't noticed this yet since the CI build scripts for the demo addins (e.g. https://github.com/PintaProject/NightVisionEffect/blob/master/.github/workflows/build.yml) have still been running fine

I'll re-open this since we'll need to deal with it at some point once .NET 6.0 is no longer available. We might need to publish a fork of https://github.com/mono/mono-addins/tree/main/mautil built against more recent versions