Add beam summit/college banners (#34588)

Author: damccorm

website/www/site/layouts/partials/header.html

@@ -207,6 +207,18 @@
 
 <div class="top-banners swiper">
   <div class="swiper-wrapper">
+    <div class="swiper-slide">
+      <a href="https://beamsummit.org/">
+        <img class="banner-img-desktop" src="/images/banners/beam-summit/beam-summit-25-desktop.png" alt="Attend Beam Summit">
+        <img class="banner-img-mobile" src="/images/banners/beam-summit/beam-summit-25-mobile.png" alt="Attend Beam Summit">
+      </a>
+    </div>
+    <div class="swiper-slide">
+      <a href="https://beamcollege.dev/">
+        <img class="banner-img-desktop" src="/images/banners/beam-college/beam-college-25-desktop.png" alt="Attend Beam College">
+        <img class="banner-img-mobile" src="/images/banners/beam-college/beam-college-25-mobile.png" alt="Attend Beam College">
+      </a>
+    </div>
     <div class="swiper-slide">
       <a href="https://tour.beam.apache.org">
         <img class="banner-img-desktop" src="/images/banners/tour-of-beam/tour-of-beam-desktop.png" alt="Start Tour of Beam">