Bump ramsey/composer-install from 3 to 4 in the actions group #121

Job	Run time
WP VIP CS (PHP 8.3)	19s
PHPStan for WP (PHP 8.3)	23s
Security Scan (PHP 8.3)	22s
Psalm Static Analysis (PHP 8.3)	21s
WP Plugin Check (PHP 8.3)	2m 19s
PHPCS (PHP 8.3)	19s
PHPMD (PHP 8.3)	17s
Test WordPress latest with PHP 8.4	1m 1s
Test WordPress 6.5 with PHP 8.4	1m 2s
Test WordPress latest with PHP 8.3	1m 4s
Test WordPress nightly with PHP 7.4	1m 12s
Test WordPress nightly with PHP 8.0	1m 9s
Test WordPress nightly with PHP 8.4	1m 8s
Test WordPress latest with PHP 7.4	1m 4s
Test WordPress latest with PHP 8.0	1m 5s
Test WordPress 6.5 with PHP 8.3	1m 9s
Test WordPress 6.5 with PHP 8.0	1m 17s
Test WordPress 6.5 with PHP 7.4	1m 3s
Test WordPress nightly with PHP 8.3	1m 5s
	17m 39s

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