build(deps): Bump Newtonsoft.Json from 13.0.1 to 13.0.3 (#547)

Bumps Newtonsoft.Json from 13.0.1 to 13.0.3.


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EssentialCSharp.Web.Tests/EssentialCSharp.Web.Tests.csproj

@@ -15,6 +15,7 @@
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" />
+    <PackageReference Include="Newtonsoft.Json" />
     <PackageReference Include="xunit" />
     <PackageReference Include="xunit.runner.visualstudio">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>