nuget-dressca: bump Microsoft.AspNetCore.SpaProxy

Bumps [Microsoft.AspNetCore.SpaProxy](https://github.com/dotnet/aspnetcore) from 6.0.24 to 8.0.0.
- [Release notes](https://github.com/dotnet/aspnetcore/releases)
- [Changelog](https://github.com/dotnet/aspnetcore/blob/main/docs/ReleasePlanning.md)
- [Commits](dotnet/aspnetcore@v6.0.24...v8.0.0)

---
updated-dependencies:
- dependency-name: Microsoft.AspNetCore.SpaProxy
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

samples/Dressca/dressca-backend/Directory.Packages.props

@@ -4,7 +4,7 @@
     <PackageVersion Include="Microsoft.AspNetCore.Http.Abstractions" Version="2.2.0" />
     <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="6.0.24" />
     <PackageVersion Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="6.0.24" />
-    <PackageVersion Include="Microsoft.AspNetCore.SpaProxy" Version="6.0.24" />
+    <PackageVersion Include="Microsoft.AspNetCore.SpaProxy" Version="8.0.0" />
     <PackageVersion Include="Microsoft.EntityFrameworkCore.Design" Version="6.0.24" />
     <PackageVersion Include="Microsoft.EntityFrameworkCore.SqlServer" Version="6.0.24" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="6.0.0" />