Bump Newtonsoft.Json from 10.0.3 to 13.0.2 in /ConektaSDK (#7)

Bumps [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json) from 10.0.3 to 13.0.2.
- [Release notes](https://github.com/JamesNK/Newtonsoft.Json/releases)
- [Commits](JamesNK/Newtonsoft.Json@10.0.3...13.0.2)

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

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ConektaSDK/packages.config

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="CocoaSharp.ObjectiveC" version="1.0.0" targetFramework="portable-net45+win+wpa81+MonoTouch10+MonoAndroid10+xamarinmac20+xamarinios10" />
-  <package id="Newtonsoft.Json" version="10.0.3" targetFramework="portable45-net45+win8+wpa81" />
+  <package id="Newtonsoft.Json" version="13.0.2" targetFramework="portable45-net45+win8+wpa81" />
   <package id="SharpSwift.Attributes" version="1.2.0" targetFramework="portable-net45+win+wpa81+MonoTouch10+MonoAndroid10+xamarinmac20+xamarinios10" />
 </packages>