fix: use standard severe alert color for low city bike capacity

It was previously subway orange

Author: vesameskanen

sass/themes/default/_theme.scss

@@ -57,7 +57,7 @@ $viewpoint-marker-color: $livi-blue;
 $link-color: $primary-color;
 $from-color: #4ea700;
 $to-color: #ec5188;
-$slider-severe-color: #ca4000;
+$slider-severe-color: $cancelation-red;
 $slider-warning-color: #fbb800;
 $slider-ok-color: #4ea700;
 $selected-lang-background: rgba(0, 0, 0, 0.15);