GH Actions: Bump ramsey/composer-install from 2 to 3 #299

Job	Run time
Test: PHP 5.5 on PHPCS 3.5.6	22s
Test: PHP 5.5 on PHPCS dev-master	23s
Test: PHP 5.6 on PHPCS 3.5.6	26s
Test: PHP 5.6 on PHPCS dev-master	18s
Test: PHP 7.0 on PHPCS 3.5.6	13s
Test: PHP 7.0 on PHPCS dev-master	14s
Test: PHP 7.1 on PHPCS 3.5.6	21s
Test: PHP 7.1 on PHPCS dev-master	13s
Test: PHP 7.2 on PHPCS 3.5.6	49s
Test: PHP 7.2 on PHPCS dev-master	22s
Test: PHP 7.3 on PHPCS 3.5.6	17s
Test: PHP 7.3 on PHPCS dev-master	21s
Test: PHP 8.3 on PHPCS 3.6.1	13s
Test: PHP 8.2 on PHPCS 3.6.1	22s
Test: PHP 8.1 on PHPCS dev-master	22s
Test: PHP 8.1 on PHPCS 3.6.1	21s
Test: PHP 8.0 on PHPCS dev-master	14s
Test: PHP 8.0 on PHPCS 3.5.7	13s
Test: PHP 7.4 on PHPCS dev-master	14s
Test: PHP 8.4 on PHPCS dev-master	16s
Coverage: PHP 8.3 on PHPCS dev-master	22s
Coverage: PHP 7.4 on PHPCS 3.5.6	23s
Coverage: PHP 5.4 on PHPCS dev-master	1m 6s
Coverage: PHP 5.4 on PHPCS 3.5.6	1m 5s
coveralls-finish	3s
	9m 33s

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