[FIX] website: fix carousel blockquote width on mobile

Before this commit, the width of carousel blockquotes was too small to
display correctly on mobile device.

Part of #55857

task-2318526

Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

addons/website/static/src/snippets/s_quotes_carousel/001.scss

 .s_quotes_carousel_wrapper[data-vcss='001'] {
     .s_blockquote {
         margin-bottom: 0;
+        @include media-breakpoint-down(sm) {
+            width: 100% !important; // TODO add the right class in the xml when it's possible
+        }
     }
 }