chore: update image (#10621)

Author: thelostone-mc

app/assets/v2/images/grants/gr13-banner-half-1.png

@@ -20,7 +20,7 @@ <h4 class="text-wrap gc-font-base font-weight-normal mb-md-5 mb-4 pt-md-4 pt-1 t
     </div>
     <div class="col-md order-md-last order-first">
       {% if show_main_round_banner %}
-        <img src="{% static 'v2/images/grants/gr13-banner-half-1.png' %}" class="d-block w-100"/>
+        <img src="{% static 'v2/images/grants/gr14-banner.png' %}" class="d-block w-100"/>
       {% else %}
         <img src="{% static 'v2/images/grants/rocket.svg' %}" height="241" width="311" />
       {% endif %}