Bump Newtonsoft.Json in /CSharp/BotBuilderLocation.Tests

Bumps [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json) from 11.0.2 to 13.0.1.
- [Release notes](https://github.com/JamesNK/Newtonsoft.Json/releases)
- [Commits](https://github.com/JamesNK/Newtonsoft.Json/compare/11.0.2...13.0.1)

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

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CSharp/BotBuilderLocation.Tests/packages.config

@@ -9,6 +9,6 @@
   <package id="Microsoft.IdentityModel.Protocol.Extensions" version="1.0.4.403061554" targetFramework="net46" />
   <package id="Microsoft.Rest.ClientRuntime" version="2.3.3" targetFramework="net46" />
   <package id="Moq" version="4.5.23" targetFramework="net46" />
-  <package id="Newtonsoft.Json" version="11.0.2" targetFramework="net46" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net46" />
   <package id="System.IdentityModel.Tokens.Jwt" version="4.0.4.403061554" targetFramework="net46" />
 </packages>