Fix sha icon positioning on safari

app/assets/stylesheets/pages/pipelines.scss

@@ -76,7 +76,7 @@
 
     svg {
       height: 14px;
-      width: auto;
+      width: 14px;
       vertical-align: middle;
       fill: $table-text-gray;
     }
@@ -158,7 +158,7 @@
 
     svg {
       width: 12px;
-      height: auto;
+      height: 12px;
       vertical-align: middle;
       margin-right: 4px;
     }