build(deps): Update dotnet monorepo to v9

Directory.Packages.props

@@ -29,10 +29,10 @@
     <PackageVersion Include="Spectre.Console.Cli" Version="0.49.1" />
     <PackageVersion Include="SuperLinq" Version="6.2.0" />
     <PackageVersion Include="System.Data.HashFunction.FNV" Version="2.0.0" />
-    <PackageVersion Include="System.Diagnostics.DiagnosticSource" Version="8.0.1" />
+    <PackageVersion Include="System.Diagnostics.DiagnosticSource" Version="9.0.0" />
     <PackageVersion Include="System.Private.Uri" Version="4.3.2" />
     <PackageVersion Include="System.Reactive" Version="6.0.1" />
-    <PackageVersion Include="System.Text.Json" Version="8.0.5" />
+    <PackageVersion Include="System.Text.Json" Version="9.0.0" />
     <PackageVersion Include="SystemTextJson.JsonDiffPatch" Version="2.0.0" />
     <PackageVersion Include="TestableIO.System.IO.Abstractions" Version="21.1.7" />
     <PackageVersion Include="TestableIO.System.IO.Abstractions.Extensions" Version="2.2.5" />