CssXPath-StarSelector (#4506)

* CssXPath-StarSelector
Add support for selectors such as `a[href*="example"]`
https://developer.mozilla.org/docs/Web/CSS/Attribute_selectors
Translated to `.//a[contains(@href,"example")]`

Upstream PR: https://github.com/PhpGt/CssXPath/pull/181

* Upstream merged

lib/phpgt/cssxpath/src/NotYetImplementedException.php

@@ -1,4 +1,4 @@
 <?php
 namespace Gt\CssXPath;
 
-class NotYetImplementedException extends CssXPathException {}
+class NotYetImplementedException extends CssXPathException {}