Remove upper bound limits on FSharp.Core

[TheAngryByrd]

There are upper bound limits on FSharp.Core that make it impossible to update when using F# 9 or 10. I can't update paket-lock-diff because paket 10 relies on F# 9.

Safe.Server

net8.0
[Fable.Remoting.Giraffe](https://www.nuget.org/packages/Fable.Remoting.Giraffe/) (>= 5.21.0 && < 6.0.0)
[FSharp.Core](https://www.nuget.org/packages/FSharp.Core/) (>= 8.0.403 && < 9.0.0)
[SAFE.Server.Utils](https://www.nuget.org/packages/SAFE.Server.Utils/) (>= 5.0.0 && < 6.0.0)
[Saturn](https://www.nuget.org/packages/Saturn/) (>= 0.17.0 && < 1.0.0)

Safe.Client

net8.0
[Fable.Core](https://www.nuget.org/packages/Fable.Core/) (>= 4.5.0 && < 5.0.0)
[Fable.Elmish](https://www.nuget.org/packages/Fable.Elmish/) (>= 4.2.0 && < 5.0.0)
[Fable.Elmish.HMR](https://www.nuget.org/packages/Fable.Elmish.HMR/) (>= 7.0.0 && < 8.0.0)
[Fable.Elmish.React](https://www.nuget.org/packages/Fable.Elmish.React/) (>= 4.0.0 && < 5.0.0)
[Fable.Mocha](https://www.nuget.org/packages/Fable.Mocha/) (>= 2.17.0 && < 3.0.0)
[Fable.Remoting.Client](https://www.nuget.org/packages/Fable.Remoting.Client/) (>= 7.32.0 && < 8.0.0)
[Fable.SimpleJson](https://www.nuget.org/packages/Fable.SimpleJson/) (>= 3.24.0)
[Feliz](https://www.nuget.org/packages/Feliz/) (>= 2.9.0 && < 3.0.0)
[Feliz.DaisyUI](https://www.nuget.org/packages/Feliz.DaisyUI/) (>= 5.2.0 && < 6.0.0)
[FSharp.Core](https://www.nuget.org/packages/FSharp.Core/) (>= 8.0.403 && < 9.0.0)
[SAFE.Client.Utils](https://www.nuget.org/packages/SAFE.Client.Utils/) (>= 5.0.1 && < 6.0.0)