Add 3.5.0 announcement.

While at it, fixing the structure a little by moving the <li>.

Signed-off-by: Ilya Maximets <i.maximets@ovn.org>

Author: igsilya

_includes/side-widgets.html

@@ -5,9 +5,12 @@
   <div class="widget-body">
     <ul>
       <li>
+        <a href=https://mail.openvswitch.org/pipermail/ovs-announce/2025-February/000364.html>Feb 17 2025: Open vSwitch 3.5.0 is now Available!</a>
+      </li>
       <li>
         <a href=https://mail.openvswitch.org/pipermail/ovs-announce/2024-November/000360.html>Nov 16 2024: Open vSwitch 3.4.1, 3.3.3, 3.2.4 and 3.1.6 are available</a>
       </li>
+      <li>
         <a href="https://mail.openvswitch.org/pipermail/ovs-announce/2024-August/000354.html">Aug 27 2024: Open vSwitch 3.3.2 and 2.17.11 are available</a>
       </li>
       <li>
@@ -76,9 +79,6 @@
       <li>
         <a href=https://mail.openvswitch.org/pipermail/ovs-announce/2022-May/000291.html>May 23 2022: OVS+OVS '22: Call for Participation</a>
       </li>
-      <li>
-        <a href=https://mail.openvswitch.org/pipermail/ovs-announce/2022-April/000290.html>Apr 08 2022: Open vSwitch 2.17.1, 2.16.3, 2.15.4, 2.14.5 and 2.13.7 are available</a>
-      </li>
     </ul>
   </div>
 </div>