use html parsing method from Symfony 5.4

should improve compatibility with PHP 8.3 because it no longer uses
deprecated mb_convert_encoding

Support Symfony 7.x

Ref: https://symfony.com/blog/symfony-7-0-0-released

Protect closing tags in html strings within scripts

(cherry picked from commit e8de7cd)

Protect closing tags in html strings within scripts

Version 2.0.2

remove php 7.4 from tests

allow Symfony 5

Travis config: exclude PHP 7.1 from Symfony dev-master

Updated changelog

Version 1.4.1