MDL-75475 lib: Upgraded PHP CSS Parser to 8.4.0

lib/php-css-parser/Renderable.php

@@ -2,8 +2,20 @@
 
 namespace Sabberworm\CSS;
 
-interface Renderable {
-	public function __toString();
-	public function render(\Sabberworm\CSS\OutputFormat $oOutputFormat);
-	public function getLineNo();
-}
+interface Renderable
+{
+    /**
+     * @return string
+     */
+    public function __toString();
+
+    /**
+     * @return string
+     */
+    public function render(OutputFormat $oOutputFormat);
+
+    /**
+     * @return int
+     */
+    public function getLineNo();
+}