add note about ecosystem workshop

content/zurihac2024/index.html

@@ -154,6 +154,18 @@ <h1 class="color1">Schedule</h1>
 <script type="text/JavaScript" src="/zurihac2023/schedule.js">
 </script>
 
+<h1>2024 Haskell Ecosystem Workshop</h1>
+<section>
+  <p>
+    The <a href="https://haskell.foundation/">Haskell Foundation</a>,
+    the <a href="https://www.ost.ch/en/university-of-applied-sciences/">OST Eastern Switzerland University of Applied Sciences</a>,
+    are organizing a two-day ecosystem workshop to be held immediately prior to
+    Zurihac at the same venue.
+    <a href="https://haskell.foundation/events/2024-haskell-ecosystem-workshop.html">You
+    can find more information and register for the event here</a>.
+  </p>
+</section>
+
 <h1 id="partners" class="plain">Supported by</h1>
 <div class="partners">
   <a href="https://www.janestreet.com/join-jane-street/open-roles/" target="_blank"><img alt="Jane Street" src="/images/s43/jane-street.png"></a>