Upgrade to .NET 9

Just a few days ago .NET 9 was released. I was actually doubted to deploy my blog later and use .NET 9 directly. This time I took the safe way and did it in 2 steps. 
I wanted to upgrade even though it is a standard term support instead of a long term support. Mainly because I try to stay on the latest version.

.NET 9 isn't a release with the biggest new features. There are some like System.Text.Json that got some extra features, not that important for my blog project. Also Entity Framework has some nice features, but even more performance improvements. That is actually the biggest difference in .NET 9 at some point they really made a big performance improvement which is nice.