build

Initial .NET 9 upgrade #207

Job	Run time
Build All Projects (Part 1 - Displaying Data)	5m 21s
Build All Projects (Part 2 - MVVM)	6m 12s
Build All Projects (Part 3 - Navigation)	5m 14s
Build All Projects (Part 4 - Platform Features)	4m 51s
Build All Projects (Part 5 - CollectionView)	5m 51s
Build All Projects (Part 6 - AppThemes)	5m 43s
Build All Projects (Community Modules/XAML/Part 1 - Fundamentals/Finish)	5m 21s
Build All Projects (Community Modules/XAML/Part 2 - Responsibility/Finish)	5m 15s
Build All Projects (Community Modules/XAML/Part 3 - Magic Values/Finish)	6m 6s
Build All Projects (Community Modules/XAML/Part 4 - Naming/Finish)	5m 45s
Build All Projects (Community Modules/XAML/Part 5 - Custom Types/Finish)	5m 16s
	1h 0m 55s

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