Check PHP Parser v5 compatibility

[dereuromark]

My app reported:

packages are not up to date:

  - nikic/php-parser (v4.18.0) latest is v5.0.0


brick/varexporter         0.4.0   requires nikic/php-parser (^4.0)          
cakephp/bake              3.0.5   requires nikic/php-parser (^4.13.2)       
phpunit/php-code-coverage 10.1.11 requires nikic/php-parser (^4.18 || ^5.0) 
sebastian/complexity      3.2.0   requires nikic/php-parser (^4.18 || ^5.0) 
sebastian/lines-of-code   2.0.2   requires nikic/php-parser (^4.18 || ^5.0)