Leadership: update Laura’s headshot [fix mozilla#14506] (mozilla#14511)

bedrock/mozorg/templates/mozorg/about/leadership/includes/executive.html

@@ -15,14 +15,27 @@ <h2 class="group-title">Executive Steering Committee</h2>
   <div class="gallery mgmt-corp">
     <article id="laura-chambers" data-id="laura-chambers" class="vcard has-bio" itemscope itemtype="http://schema.org/Person">
       <figure class="headshot">
-        <img class="photo" src="{{ static('img/mozorg/about/leadership/laura-chambers.jpg') }}" alt="" itemprop="image" width="160" height="160">
+        {{ resp_img(
+          url='img/mozorg/about/leadership/laura-chambers.jpg',
+          srcset={
+            'img/mozorg/about/leadership/laura-chambers-high-res.jpg': '2x'
+          },
+          optional_attributes={
+            'width': '160',
+            'height': '160',
+            'class': 'photo',
+            'itemprop': 'image'
+          }
+        ) }}
         <figcaption><h4 class="fn" itemprop="name">Laura Chambers</h4></figcaption>
       </figure>
 
       <div class="person-info">
         <p class="title" itemprop="jobTitle">Chief Executive Officer</p>
 
         <ul class="utility">
+          <li><a class="file" rel="external"
+            href="https://assets.mozilla.net/leadership/mozilla-laura-chambers.zip">Download photos</a></li>
           <li><a class="link" href="{{ url('mozorg.about.leadership.index') }}#laura-chambers">Link to this bio</a></li>
         </ul>
       </div>
@@ -76,7 +89,7 @@ <h2 class="group-title">Executive Steering Committee</h2>
       </div>
     </article>
 
-      <article id="ian-carmichael" data-id="ian-carmichael" class="vcard has-bio" itemscope itemtype="http://schema.org/Person">
+    <article id="ian-carmichael" data-id="ian-carmichael" class="vcard has-bio" itemscope itemtype="http://schema.org/Person">
     <figure class="headshot">
       {{ resp_img(
         url='img/mozorg/about/leadership/ian-carmichael.jpg',