Update to 100.15.1 - preview4

[MichaelDavis3]

Has anyone been able to update to the 100.15 preview for MAUI? I keep getting package restore errors from Nuget.  Have tried clearing the nugget cache with not luck.

[dotMorten_esri]

Hah glad it at least works now.

> Yes when it fails to update to 100.15-preview4 it stays at 100.14.1-preview3

I generally don't trust the update dialog, but just change it manually in the csproj file.