Bump Newtonsoft.Json from 7.0.1 to 13.0.1 in /BlogEngine/BlogEngine.NET

Bumps [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json) from 7.0.1 to 13.0.1.
- [Release notes](https://github.com/JamesNK/Newtonsoft.Json/releases)
- [Commits](JamesNK/Newtonsoft.Json@7.0.1...13.0.1)

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

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

BlogEngine/BlogEngine.NET/packages.config

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="angularjs" version="1.3.0" targetFramework="net45" />
   <package id="Antlr" version="3.5.0.2" targetFramework="net45" />
@@ -18,7 +18,7 @@
   <package id="Microsoft.AspNet.WebPages" version="3.2.3" targetFramework="net45" />
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" />
   <package id="Moment.js" version="2.10.6" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net45" />
   <package id="SimpleInjector" version="3.1.0" targetFramework="net45" />
   <package id="SimpleInjector.Extensions.ExecutionContextScoping" version="3.1.0" targetFramework="net45" />
   <package id="SimpleInjector.Integration.WebApi" version="3.1.0" targetFramework="net45" />