fix(partners): a11y - add blank alt for decorative pic

src/partners.html

@@ -39,7 +39,7 @@ <h1 class="text-white mb-3">Partners</h1>
   <div class="col-md-10 col-11 px-0 mx-0">
     <div class="offset-md-2 col-md-8 mt-md-4 mt-2">
       <section class="pb-md-2">
-        <img class="w-100 h-150 rounded-1" src="/images/partners-background-cdt.png" />
+        <img class="w-100 h-150 rounded-1" alt="" src="/images/partners-background-cdt.png" />
         <h2 class="my-md-4 my-3">California Department of Technology</h2>
         <p>
           We collaborate with the
@@ -111,7 +111,7 @@ <h3 class="text-white d-block mb-3 mb-md-0">Total reduced-fare open loop transac
       <hr class="my-4 d-none d-lg-block" />
 
       <section class="pt-4">
-        <img class="w-100 h-150 rounded-1" src="/images/partners-background-carb.png" />
+        <img class="w-100 h-150 rounded-1" alt="" src="/images/partners-background-carb.png" />
         <h2 class="my-3 my-md-4">California Air Resources Board</h2>
         <figure class="quote border-purple-4 my-3 my-md-4-4">
           <blockquote>“CARB QUOTE TK TK TK.”</blockquote>