move Red Dot Ruby from future to past

Author: davearonson

_includes/upcoming-engagements.html

@@ -9,7 +9,6 @@
 
 |When||Conference||Where||Topic(s) |
 |-|
-|July 2024||[Red Dot Ruby Conference](https://www.reddotrubyconf.com/){:rel="nofollow" target="_new"}||Singapore||Genetic Algos|
 |October 2024||[Code BEAM Europe](https://codebeameurope.com/){:rel="nofollow" target="_new"}||Berlin, Germany||ACRUMEN|
 |November 2024||[Heapcon](https://heapcon.io/){:rel="nofollow" target="_new"}||Belgrade, Serbia||Mutants|
 {:class="upcoming-engagements speaking"}

speaking/past.md

@@ -21,6 +21,18 @@ but also some podcasts, user-group meetings, etc.:
     </tr>
   </thead>
   <tbody>
+
+    <tr>
+      <td class="numeric">2024</td>
+      <td><a href="https://www.reddotrubyconf.com/" rel="nofollow" target="_new">Red Dot Ruby Conference</a></td>
+      <td>Singapore</td>
+      <td>Genetic Algos</td>
+      <td>
+        <a href="/reds/gen-algs-rdrc-24-slides" target="_new">slides</a>+
+      </td>
+      <td class="numeric">30</td>
+    </tr>
+
     <tr>
       <td class="numeric">2024</td>
       <td><a href="https://jnation.pt/" rel="nofollow" target="_new">JNation</a></td>