Raise version to 2.2.1

Author: fsuter

ext_emconf.php

@@ -15,7 +15,7 @@
         'author' => 'Francois Suter',
         'author_email' => '[email protected]',
         'author_company' => '',
-        'version' => '2.2.0',
+        'version' => '2.2.1',
         'constraints' => [
                 'depends' => [
                         'typo3' => '9.5.0-10.4.99',