Bump Newtonsoft.Json in /source/Handlebars.Benchmark

Bumps [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json) from 9.0.1 to 13.0.1.
- [Release notes](https://github.com/JamesNK/Newtonsoft.Json/releases)
- [Commits](JamesNK/Newtonsoft.Json@9.0.1...13.0.1)

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

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

Author: dependabot[bot]

source/Handlebars.Benchmark/Handlebars.Benchmark.csproj

@@ -10,7 +10,7 @@
 
     <ItemGroup>
       <PackageReference Include="BenchmarkDotNet" Version="0.12.1" />
-      <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
+      <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     </ItemGroup>
 
     <ItemGroup>