Update to laravel 7

vendor/symfony/css-selector/Node/SelectorNode.php

@@ -50,9 +50,6 @@ class SelectorNode extends AbstractNode
         return $this->tree->getSpecificity()->plus(new Specificity(0, 0, $this->pseudoElement ? 1 : 0));
     }
 
-    /**
-     * {@inheritdoc}
-     */
     public function __toString(): string
     {
         return sprintf('%s[%s%s]', $this->getNodeName(), $this->tree, $this->pseudoElement ? '::'.$this->pseudoElement : '');