Add changelog for sockets PHP 8.4 change

This was changed in db22a7c already

Author: Girgias

reference/sockets/functions/socket-create-listen.xml

@@ -74,6 +74,13 @@
      </row>
     </thead>
     <tbody>
+     <row>
+      <entry>8.4.0</entry>
+      <entry>
+       The default value of is now <constant>SOMAXCONN</constant>.
+       Previously it was <literal>128</literal>.
+      </entry>
+     </row>
      <row>
       <entry>8.0.0</entry>
       <entry>