[Xamarin.Android.Build.Tests] Fix ActionBarSherlock URL (#8926)

On 2024-May-01, xamarin/monodroid-samples was updated so that the
`main` branch no longer contained samples for Classic Xamarin.Android.
This in turn meant the removal of the ActionBarSherlock sample.

This change in turn broke xamarin-android unit tests, which attempt
to download this URL, which no longer exists:

  * <https://github.com/xamarin/monodroid-samples/blob/main/ActionBarSherlock/ActionBarSherlock/Jars/ActionBarSherlock-4.3.1.zip?raw=true>

Oops.

As part of the removal of Classic Xamarin.Android samples, a new
`monodroid-samples/archived-xamarin` branch was created, which is
the state of the `main` branch before all old samples were removed.

Update the `BindingBuildTest.RemoveEventHandlerResolution()`
integration test to use the correct URL for ActionBarSherlock.

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

@@ -436,7 +436,7 @@ public void RemoveEventHandlerResolution ()
 				IsRelease = true,
 				Jars = {
 					new AndroidItem.LibraryProjectZip ("Jars\\ActionBarSherlock-4.3.1.zip") {
-						WebContent = "https://github.com/xamarin/monodroid-samples/blob/main/ActionBarSherlock/ActionBarSherlock/Jars/ActionBarSherlock-4.3.1.zip?raw=true"
+						WebContent = "https://github.com/xamarin/monodroid-samples/blob/archived-xamarin/ActionBarSherlock/ActionBarSherlock/Jars/ActionBarSherlock-4.3.1.zip?raw=true"
 					}
 				},
 				AndroidClassParser = "class-parse",