Merge pull request #53620 from nextcloud/bugfix/noid/use-query-parameters

fix(caldav): Use parameter for query to neutralize it in query diffs

Author: nickvergessen

apps/dav/lib/CalDAV/CalDavBackend.php

@@ -2986,7 +2986,7 @@ protected function addChanges(int $calendarId, array $objectUris, int $operation
 					'calendarid' => $query->createNamedParameter($calendarId),
 					'operation' => $query->createNamedParameter($operation),
 					'calendartype' => $query->createNamedParameter($calendarType),
-					'created_at' => time(),
+					'created_at' => $query->createNamedParameter(time()),
 				]);
 			foreach ($objectUris as $uri) {
 				$query->setParameter('uri', $uri);