chore: bump Microsoft.AspNetCore.Mvc.NewtonsoftJson in /src (xoofx#343)

Bumps [Microsoft.AspNetCore.Mvc.NewtonsoftJson](https://github.com/dotnet/aspnetcore) from 8.0.2 to 8.0.3.
- [Release notes](https://github.com/dotnet/aspnetcore/releases)
- [Changelog](https://github.com/dotnet/aspnetcore/blob/main/docs/ReleasePlanning.md)
- [Commits](dotnet/aspnetcore@v8.0.2...v8.0.3)

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

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

src/Directory.Packages.props

@@ -4,7 +4,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.22.0" />
-    <PackageVersion Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="8.0.2" />
+    <PackageVersion Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="8.0.3" />
     <PackageVersion Include="Microsoft.Extensions.Options" Version="8.0.2" />
     <PackageVersion Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="8.0.0" />
     <PackageVersion Include="Microsoft.Extensions.Options.DataAnnotations" Version="8.0.0" />