fix a test

Author: dellis1972

src/Xamarin.Android.Build.Tasks/Tests/Xamarin.Android.Build.Tests/AndroidUpdateResourcesTest.cs

@@ -830,6 +830,7 @@ public string GetFoo () {
 					rawToDelete,
 				},
 			};
+			libProj.SetProperty ("Deterministic", "true");
 			var appProj = new XamarinAndroidApplicationProject () {
 				IsRelease = true,
 				ProjectName = "App1",