Bump Microsoft.AspNetCore.Mvc.NewtonsoftJson from 5.0.8 to 5.0.9 in /src (#735)

Bumps [Microsoft.AspNetCore.Mvc.NewtonsoftJson](https://github.com/dotnet/aspnetcore) from 5.0.8 to 5.0.9.
- [Release notes](https://github.com/dotnet/aspnetcore/releases)
- [Commits](https://github.com/dotnet/aspnetcore/commits)

---
updated-dependencies:
- dependency-name: Microsoft.AspNetCore.Mvc.NewtonsoftJson
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

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src/SampleWeb/SampleWeb.csproj

@@ -11,7 +11,7 @@
     <!--<PackageReference Include="GraphQL.Server.Transports.WebSockets" Version="3.5.0-alpha0046" />-->
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="5.0.9" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
-    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="5.0.8" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="5.0.9" />
     <ProjectReference Include="..\GraphQL.EntityFramework\GraphQL.EntityFramework.csproj" />
     <PackageReference Include="ProjectDefaults" Version="1.0.56" PrivateAssets="All" />
   </ItemGroup>