Disallow CI’s finished time wrapping

Signed-off-by: Vitaly Baev <dj@vitalybaev.ru>

app/assets/stylesheets/pages/pipelines.scss

@@ -213,6 +213,7 @@
   .finished-at {
     color: $gl-text-color-secondary;
     margin: 4px 0;
+    white-space: nowrap;
 
     .fa {
       font-size: 12px;