Composer/GH Actions: start using PHPCSDevTools 2.0 #385

Job	Run time
QTest: PHP latest - PHPCS lowest	12s
QTest + Lint: PHP 5.4 - PHPCS stable	29s
QTest + Lint: PHP latest - PHPCS stable	12s
QTest: PHP 5.4 - PHPCS lowest	15s
	1m 8s

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