Remove net5.0 (unsupported) NuGet sources (and update System.CommandLine.DragonFruit) (#2666)

NuGet.config

@@ -9,8 +9,6 @@
     <add key="dotnet8" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet8/nuget/v3/index.json" />
     <add key="dotnet7" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet7/nuget/v3/index.json" />
     <add key="dotnet6" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet6/nuget/v3/index.json" />
-    <add key="dotnet5" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5/nuget/v3/index.json" />
-    <add key="dotnet5-transport" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-transport/nuget/v3/index.json" />
     <add key="dotnet3.1" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet3.1/nuget/v3/index.json" />
     <add key="dotnet3.1-transport" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet3.1-transport/nuget/v3/index.json" />
     <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />

src/tools/ScenarioMeasurement/SizeOnDisk/SizeOnDisk.csproj

@@ -8,7 +8,7 @@
     <RootNamespace>ScenarioMeasurement</RootNamespace>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="System.CommandLine.DragonFruit" Version="2.0.0-beta1.20074.1" />
+    <PackageReference Include="System.CommandLine.DragonFruit" Version="0.4.0-alpha.22272.1" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Util\Util.csproj" />

src/tools/ScenarioMeasurement/Startup/Startup.csproj

@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Diagnostics.Tracing.TraceEvent" Version="3.0.0" />
-    <PackageReference Include="System.CommandLine.DragonFruit" Version="0.3.0-alpha.20158.1" />
+    <PackageReference Include="System.CommandLine.DragonFruit" Version="0.4.0-alpha.22272.1" />
     <PackageReference Include="System.Security.Principal.Windows" Version="4.7.0" />
   </ItemGroup>