fix: Adapte Directory::copyInto signature to new version of sabre/dav

Signed-off-by: Carl Schwan <carl@carlschwan.eu>

Author: CarlSchwan

apps/dav/lib/Connector/Sabre/Directory.php

@@ -464,7 +464,7 @@ public function moveInto($targetName, $fullSourcePath, INode $sourceNode) {
 	}
 
 
-	public function copyInto($targetName, $sourcePath, INode $sourceNode) {
+	public function copyInto($targetName, $sourcePath, INode $sourceNode, int $depth) {
 		if ($sourceNode instanceof File || $sourceNode instanceof Directory) {
 			try {
 				$destinationPath = $this->getPath() . '/' . $targetName;