Release 2.2.0 (#4359)

* deactivate deprecation logging in prod for now
* fix several deprecations
* enable CSRF for logout
* allow more twig methods and functions in InvoiceSecurity policy

src/WorkingTime/Model/Year.php

@@ -28,7 +28,7 @@ final class Year extends BaseYear
         return $this->user;
     }
 
-    protected function createMonth(\DateTimeInterface $month): Month
+    protected function createMonth(\DateTimeImmutable $month): Month
     {
         return new Month($month, $this->user);
     }