Bump Newtonsoft.Json in /src/NetCore2Blockly/NetCore2Blockly

Bumps [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json) from 12.0.3 to 13.0.1.
- [Release notes](https://github.com/JamesNK/Newtonsoft.Json/releases)
- [Commits](JamesNK/Newtonsoft.Json@12.0.3...13.0.1)

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

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

Author: dependabot[bot]

src/NetCore2Blockly/NetCore2Blockly/NetCore2Blockly.csproj

@@ -39,7 +39,7 @@
     <PackageReference Include="Microsoft.Extensions.FileProviders.Embedded" Version="3.1.3" />
     <PackageReference Include="Microsoft.OpenApi.Readers" Version="1.1.4" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="System.IO.Pipelines" Version="4.7.2" />
     <PackageReference Include="AMSWebAPI" Version="2021.7.6.628" />
     <PackageReference Include="AMS_Base" Version="2021.7.6.628" />