Replace tester.pumpAndSettle(); with tester.pump();

Replacing `tester.pumpAndSettle();` with `tester.pump();` resolves an issue where `pumpAndSettle()` waits for all animations to complete, causing an infinite loop with `CircularProgressIndicator`. Using `pump()` ensures efficient frame building without unnecessary animation waiting.

Author: YoussefMoRabie

test/widgets/intro_message_test.dart

@@ -13,7 +13,7 @@ void main() {
       ),
     );
 
-    await tester.pumpAndSettle();
+    await tester.pump();
     expect(find.text('Welcome to API Dash ⚡️'), findsOneWidget);
 
     expect(find.byType(RichText), findsAtLeastNWidgets(1));