Update speaking

Author: csswizardry

_includes/speaking.html

@@ -1,4 +1,4 @@
 <li>
   <h4 class="list-ui__title">Talk</h4>
-  <img src="/img/icons/hr.png" alt width="16" height="11" loading="lazy" /> <a href="https://shift.infobip.com/">Infobip Shift</a>: Zadar (Croatia), September 2025
+  <img src="/img/icons/hr.png" alt width="16" height="11" loading="lazy" /> <a href="https://shift.infobip.com/">Shift Conference</a>: Zadar (Croatia), September 2025
 </li>