build

Initial .NET 9 upgrade #210

Job	Run time
Build All Projects (Part 1 - Displaying Data)	5m 26s
Build All Projects (Part 2 - MVVM)	5m 14s
Build All Projects (Part 3 - Navigation)	4m 10s
Build All Projects (Part 4 - Platform Features)	4m 25s
Build All Projects (Part 5 - CollectionView)	4m 50s
Build All Projects (Part 6 - AppThemes)	4m 59s
Build All Projects (Community Modules/XAML/Part 1 - Fundamentals/Finish)	5m 26s
Build All Projects (Community Modules/XAML/Part 2 - Responsibility/Finish)	4m 50s
Build All Projects (Community Modules/XAML/Part 3 - Magic Values/Finish)	5m 6s
Build All Projects (Community Modules/XAML/Part 4 - Naming/Finish)	4m 38s
Build All Projects (Community Modules/XAML/Part 5 - Custom Types/Finish)	5m 13s
	54m 17s

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