feat(install): upgrade from 2.11.3 to 2.12

Signed-off-by: Thierry Bugier <tbugier@teclib.com>

Author: btry

install/install.php

@@ -67,7 +67,7 @@ class PluginFormcreatorInstall {
       '2.10'   => '2.10.2',
       '2.10.2' => '2.11',
       '2.11'   => '2.11.3',
-      '2.11'   => '2.12',
+      '2.11.3' => '2.12',
    ];
 
    /**