Bump Newtonsoft.Json from 11.0.2 to 13.0.2 in /src

Bumps [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json) from 11.0.2 to 13.0.2.
- [Release notes](https://github.com/JamesNK/Newtonsoft.Json/releases)
- [Commits](JamesNK/Newtonsoft.Json@11.0.2...13.0.2)

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

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

Author: dependabot[bot]

src/packages.config

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="log4net" version="2.0.8" targetFramework="net451" />
-  <package id="Newtonsoft.Json" version="11.0.2" targetFramework="net451" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net451" />
   <package id="WebSocketSharp" version="1.0.3-rc11" targetFramework="net451" />
 </packages>

src/trunkbot.csproj

@@ -85,7 +85,7 @@
 
   <ItemGroup>
     <PackageReference Include="log4net" Version="2.0.14" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="WebSocketSharp-netstandard" Version="1.0.1" />
   </ItemGroup>