Bump Newtonsoft.Json in /benchmark/SerializerBenchmark

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](https://github.com/JamesNK/Newtonsoft.Json/compare/12.0.3...13.0.1)

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

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

benchmark/SerializerBenchmark/SerializerBenchmark.csproj

@@ -20,7 +20,7 @@
     <PackageReference Include="SpanJson" Version="3.0.1" />
     <PackageReference Include="System.Text.Json" Version="4.6.0" />
     <PackageReference Include="Utf8Json" Version="1.3.7" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="Newtonsoft.Json.Bson" Version="1.0.2" />
   </ItemGroup>