.Net-Framework 4.8.1 not selectable

[ulfllorenz]

Description

For the targeted framework, you can supply every .Net framework version up to 48, but not 4.8.1. As far as my non-existing F# knowledge tells me, you probably only need to add a few lines in FrameworkHandling.fs.

Repro steps

In the paket.dependencies, set

framework: net481

which gives an error.