deps: upgrade and remove spotify for now

src/styles/variables.scss

@@ -1,9 +1,14 @@
+@use 'sass:color';
+
 $color: #f8efba;
 $bgcolor: #2c3a47;
 $font-family: 'Major Mono Display', monospace;
 $serif-font-family: 'Cormorant Garamond', serif;
 
+// Fonction utilitaire pour remplacer desaturate()
+$color-desaturated: color.adjust($color, $saturation: -70%);
+
 :root {
   --pm-app-surface-color: #{#2c3a47};
   --pm-primary-color: #{$color};
-}
+}