Merge pull request #14949 from owncloud/sabre-2.1.3

Update sabre-2.1.3 thirdparty submodule

3rdparty

@@ -1 +1 @@
-Subproject commit 08b820614ae99477d7c9319630f400d22b20e2fd
+Subproject commit 244f75dc8d4552bb73a4aa93a1c6eeafdeb801d8

lib/private/connector/sabre/principal.php

@@ -177,9 +177,10 @@ class Principal implements \Sabre\DAVACL\PrincipalBackend\BackendInterface {
 
 	/**
 	 * @param string $uri
+	 * @param string $principalPrefix
 	 * @return string
 	 */
-	function findByUri($uri) {
+	function findByUri($uri, $principalPrefix) {
 		return '';
 	}
 }