Drop support for SSP 2.1

End of security-support was reached

Author: tvdijen

security/index.md

@@ -33,12 +33,7 @@ to learn how to properly report vulnerabilities, as well as to find information
     <td class="tg-d52n">2025-08-20</td>
   </tr>
   <tr>
-    <td class="tg-3wb8">2.1</td>
-    <td class="tg-tw5s">2024-09-08</td>
-    <td class="tg-d52n">2025-03-08</td>
-  </tr>
-  <tr>
-    <td class="tg-tw5s">&lt; 2.1</td>
+    <td class="tg-tw5s">&lt; 2.2</td>
     <td class="tg-tw5s">No support</td>
     <td class="tg-tw5s">No support</td>
   </tr>