Bump sctk-adwaita to 0.4.1

This should force the use of system libraries for Fontconfig
and freetype instead of building them with cmake if missing.

This also fixes compilation failures on nightly.

Fixes #2373.

src/platform_impl/windows/drop_handler.rs

@@ -80,7 +80,7 @@ impl FileDropHandler {
         let count = drop_handler.refcount.fetch_sub(1, Ordering::Release) - 1;
         if count == 0 {
             // Destroy the underlying data
-            Box::from_raw(drop_handler as *mut FileDropHandlerData);
+            drop(Box::from_raw(drop_handler as *mut FileDropHandlerData));
         }
         count as u32
     }