firmware: we must show the version that is new, not the one installed

(cherry picked from commit 5bfa41fd)

src/opnsense/mvc/app/views/OPNsense/Core/firmware.volt

@@ -81,7 +81,7 @@ POSSIBILITY OF SUCH DAMAGE.
                     row['reason'] + '</td></tr>');
 
                     if (row['name'] == data['product_name']) {
-                        $.upgrade_show_log = data['product_version'].replace(/[_-].*/, '');
+                        $.upgrade_show_log = row['new'].replace(/[_-].*/, '');
                     }
                 });