MDL-65759 library: Update php-css-parser to 8.3.0

lib/php-css-parser/Value/CalcRuleValueList.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Sabberworm\CSS\Value;
+
+class CalcRuleValueList extends RuleValueList {
+	public function __construct($iLineNo = 0) {
+		parent::__construct(array(), ',', $iLineNo);
+	}
+
+	public function render(\Sabberworm\CSS\OutputFormat $oOutputFormat) {
+		return $oOutputFormat->implode(' ', $this->aComponents);
+	}
+
+}