Bump Newtonsoft.Json from 12.0.3 to 13.0.1 in /src/SkyApm.DotNet.CLI (#492)

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
...

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src/SkyApm.DotNet.CLI/SkyApm.DotNet.CLI.csproj

@@ -19,7 +19,7 @@
 
     <ItemGroup>
       <PackageReference Include="Microsoft.Extensions.CommandLineUtils" Version="1.1.1" />
-      <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+      <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     </ItemGroup>
 
     <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp3.1'">