Router - Test dotnet 9 / 10 performance

[huntharo]

Motivations

• Everyone is ranting and raving...

Acceptance Criteria

• Make PR moving to dotnet 9
• Stress test with high request rate and observe CPU usage
• Decide whether to move to dotnet 9 now or later

Docs

• https://learn.microsoft.com/en-us/aspnet/core/migration/80-90?view=aspnetcore-8.0&tabs=visual-studio

[huntharo]

The results were no change on CPU usage under the stress test