updated deps

fixed clippy remarks

src/level_widget.rs

@@ -13,11 +13,7 @@ pub struct LevelWidget {}
 
 impl LevelWidget {
     fn set_cell(&self, buf: &mut Buffer, x: u16, y: u16, symbol: &str, fg: Color, bg: Color) {
-        buf.
-            get_mut(x, y).
-            set_symbol(symbol).
-            set_bg(bg).
-            set_fg(fg);
+        buf[(x, y)].set_symbol(symbol).set_bg(bg).set_fg(fg);
     }
 }