chore(progress_bar): cycle duration to 1.5s

src/widget/progress_bar/circular.rs

@@ -41,7 +41,7 @@ where
             size: 40.0,
             bar_height: 4.0,
             style: <Theme as StyleSheet>::Style::default(),
-            cycle_duration: Duration::from_millis(600),
+            cycle_duration: Duration::from_millis(1500),
             rotation_duration: Duration::from_secs(2),
             progress: None,
         }

src/widget/progress_bar/linear.rs

@@ -36,7 +36,7 @@ where
             width: Length::Fixed(100.0),
             girth: Length::Fixed(4.0),
             style: Theme::Style::default(),
-            cycle_duration: Duration::from_millis(600),
+            cycle_duration: Duration::from_millis(1500),
             progress: None,
         }
     }