chore(deps): update dependency system.text.json to 9.0.4

Author: renovate[bot]

Directory.Packages.props

@@ -4,7 +4,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="System.IO.FileSystem.AccessControl" Version="5.0.0" />
-    <PackageVersion Include="System.Text.Json" Version="9.0.3"/>
+    <PackageVersion Include="System.Text.Json" Version="9.0.4"/>
     <PackageVersion Include="IsExternalInit" Version="1.0.3" />
     <PackageVersion Include="Nullable" Version="1.3.1" />
     <PackageVersion Include="Testably.Abstractions.FileSystem.Interface" Version="9.0.0" />