Raygun.Blazor: Make .NET 9 compatible

[teneko]

The Raygun.Blazor NuGet package has dependencies and one of it called Microsoft.AspNetCore.Components.Web is stricly constrained to >= 8.0.11 && < 9.0.0. It would be nice to support Microsoft.AspNetCore.Components.Web >= 9.0.0, otherwise people in .NET 8.0 cannot upgrade to .NET 9.0 because of this constraint.

[miquelbeltran]

Hi @teneko we are preparing Raygun.Blazor to support targeting both net8.0 and net9.0, as well its dependencies will support versions >= 9.0.0 when using net9.0. The work in progress can be seen here: #62