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/WorkingTimeService.php

@@ -117,7 +117,8 @@ final class WorkingTimeService
             }
 
             $workingTime->setApprovedBy($approver);
-            $workingTime->setApprovedAt($approvalDate);
+            // FIXME see calling method
+            $workingTime->setApprovedAt(\DateTimeImmutable::createFromInterface($approvalDate));
             $this->workingTimeRepository->scheduleWorkingTimeUpdate($workingTime);
         }