Bump Newtonsoft.Json in /UndoExtension/UndoExtension

Bumps [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json) from 12.0.1 to 13.0.1.
- [Release notes](https://github.com/JamesNK/Newtonsoft.Json/releases)
- [Commits](JamesNK/Newtonsoft.Json@12.0.1...13.0.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

UndoExtension/UndoExtension/packages.config

@@ -5,7 +5,7 @@
   <package id="InRule.Repository" developmentDependency="true" version="5.2.0" targetFramework="net472" />
   <package id="InRule.Runtime" developmentDependency="true" version="5.2.0" targetFramework="net472" />
   <package id="Microsoft.AspNet.WebApi.Client" version="5.2.7" targetFramework="net472" />
-  <package id="Newtonsoft.Json" version="12.0.1" targetFramework="net472" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net472" />
   <package id="System.Reactive" version="4.1.2" targetFramework="net472" />
   <package id="System.Runtime.CompilerServices.Unsafe" version="4.5.2" targetFramework="net472" />
   <package id="System.Threading.Tasks.Extensions" version="4.5.2" targetFramework="net472" />