fix #50: Upgrade project to .NET 8

Signed-off-by: Georg Eckert <[email protected]>

Author: cz-dev-ge

src/nuget-inspector/nuget-inspector.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net6.0</TargetFramework>
+        <TargetFramework>net8.0</TargetFramework>
         <RuntimeIdentifier>linux-x64</RuntimeIdentifier>
 
         <SelfContained>true</SelfContained>