[REF] *: BS5: migration

Automated change made by a lot of RegEx to change all think that is
possible to automate.

https://getbootstrap.com/docs/5.1/migration

Task ID: 2766483

Part-of: odoo/design-themes#580

theme_monglia/static/src/old_snippets/s_features_carousel/000_variables.scss

@@ -9,5 +9,5 @@ $s-features-carousel-indicators-visible: visible;
     }
 }
 @mixin s-features-carousel-mask-hook {
-    border: 1px solid gray('200');
+    border: 1px solid map-get($grays, '200');
 }