chore(psalm): Make psalm aware of sabre/uri

Signed-off-by: Julius Härtl <jus@bitgrid.net>

Author: juliusknorr

psalm.xml

@@ -77,6 +77,7 @@
 		<file name="build/stubs/ftp.php"/>
 		<file name="build/stubs/pcntl.php"/>
 		<file name="build/stubs/zip.php"/>
+		<file name="3rdparty/sabre/uri/lib/functions.php" />
 	</stubs>
 	<issueHandlers>
 		<UndefinedClass>