Bump Newtonsoft.Json in /OAuthWebSample/OAuthWebSample

Bumps [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json) from 5.0.6 to 13.0.1.
- [Release notes](https://github.com/JamesNK/Newtonsoft.Json/releases)
- [Commits](JamesNK/Newtonsoft.Json@5.0.6...13.0.1)

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

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

Author: dependabot[bot]

OAuthWebSample/OAuthWebSample/OAuthWebSample.csproj

@@ -50,7 +50,7 @@
     <PackageReference Include="Microsoft.AspNet.WebPages" Version="3.0.0" />
     <PackageReference Include="Microsoft.Web.Infrastructure" Version="1.0.0.0" />
     <PackageReference Include="Modernizr" Version="2.6.2" />
-    <PackageReference Include="Newtonsoft.Json" Version="5.0.6" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="Respond" Version="1.2.0" />
     <PackageReference Include="WebGrease" Version="1.5.2" />
   </ItemGroup>