💄 Fix the gradient on featured works on homepage

Brings in a fix from this Hyrax to fix the graient styling in the
handles of places like the featured works on the homepage.

Ref:
  - samvera/hyrax@fa1bffc

app/assets/stylesheets/hyku.scss

@@ -474,8 +474,9 @@ body.public-facing {
   border: 1px solid #aaa;
   background: #ddd;
   background: -webkit-linear-gradient(top, #ddd 0%, #bbb 100%);
-  background:    -moz-linear-gradient(top, #ddd 0%, #bbb 100%);
-  background:         linear-gradient(top, #ddd 0%, #bbb 100%);
+  background: -moz-linear-gradient(top, #ddd 0%, #bbb 100%);
+  background: -o-linear-gradient(to bottom, #ddd 0%, #bbb 100%);
+  background: linear-gradient(to bottom, #ddd 0%, #bbb 100%);
   border-top-right-radius: 0;
   border-bottom-right-radius: 0;
   z-index: 1;