Bump Newtonsoft.Json

Bumps [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json) from 6.0.8 to 13.0.1.
- [Release notes](https://github.com/JamesNK/Newtonsoft.Json/releases)
- [Commits](https://github.com/JamesNK/Newtonsoft.Json/compare/6.0.8...13.0.1)

---
updated-dependencies:
- dependency-name: Newtonsoft.Json
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Examples/Evaluation/LegacyEvalDll/EvalDll_AzureTutorial/EvalDll_AzureTutorial/packages.config

@@ -7,7 +7,7 @@
   <package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.3" targetFramework="net45" />
   <package id="Microsoft.Research.CNTK.CpuEval-mkl" version="2.7.0" targetFramework="net45" />
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="6.0.8" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net45" />
   <package id="Swashbuckle" version="5.3.1" targetFramework="net45" />
   <package id="Swashbuckle.Core" version="5.3.1" targetFramework="net45" />
   <package id="System.IdentityModel.Tokens.Jwt" version="4.0.0" targetFramework="net45" />