Add size 96 to avatar sizes in avatar.scss

app/assets/stylesheets/components/avatar.scss

@@ -50,6 +50,11 @@ $avatar-sizes: (
     line-height: 88px,
     border-radius: $border-radius-large
   ),
+  96: (
+    font-size: 36px,
+    line-height: 94px,
+    border-radius: $border-radius-large
+  ),
   100: (
     font-size: 36px,
     line-height: 98px,