Bump DependencyModel to latest version

[oleksandr-didyk]

Required by dotnet/runtime#81468
Related to dotnet/runtime#84925

Microsoft.Extensions.DependencyModel: 6.0.0 is used by Microsoft.DotNet.SharedFramework.Sdk. When a certain downstream repo (for example runtime) utilizes the package, the DependencyModel is being loaded in during build time.

In source-build context, DependencyModel: 6.0.0 is a pre-built for Arcade. To resolve this, in the past we have added an SBRP for the said package. However, as mentioned above, in certain use-cases the dependency gets loaded in during build time, failing the build as a reference package cannot be loaded for execution.

Since we cannot use a historic version and we cannot get rid of the dependency (see Viktor's comment), we need to utilize the latest version of the package. In this case, an intermediate would be used for the dependency, allowing it to be loaded during the build.