fix(tests): fix compilation in integration test

Previous commit (cd3fe9a) changed the signature of
ArchVm::get_dirty_bitmap() to get a page_size argument, but
corresponding integration test was not updated to match this change.

Signed-off-by: Babis Chalios <babis.chalios@e2b.dev>

Author: bchalios

src/vmm/tests/integration_tests.rs

@@ -138,7 +138,7 @@ fn test_dirty_bitmap_success() {
     for (vmm, _) in vmms {
         // Let it churn for a while and dirty some pages...
         thread::sleep(Duration::from_millis(100));
-        let bitmap = vmm.lock().unwrap().vm.get_dirty_bitmap().unwrap();
+        let bitmap = vmm.lock().unwrap().vm.get_dirty_bitmap(4096).unwrap();
         let num_dirty_pages: u32 = bitmap
             .values()
             .map(|bitmap_per_region| {