Bump ramsey/composer-install from 3 to 4 in the actions group #119

Job	Run time
WP VIP CS (PHP 8.3)	17s
PHPCS (PHP 8.3)	22s
PHPStan for WP (PHP 8.3)	23s
Security Scan (PHP 8.3)	15s
PHPMD (PHP 8.3)	14s
Psalm Static Analysis (PHP 8.3)	19s
WP Plugin Check (PHP 8.3)	1m 48s
Test WordPress 6.5 with PHP 7.4	59s
Test WordPress nightly with PHP 8.3	59s
Test WordPress 6.5 with PHP 8.3	1m 7s
Test WordPress nightly with PHP 7.4	1m 38s
Test WordPress latest with PHP 7.4	1m 8s
Test WordPress nightly with PHP 8.4	1m 15s
Test WordPress 6.5 with PHP 8.0	1m 4s
Test WordPress 6.5 with PHP 8.4	1m 4s
Test WordPress latest with PHP 8.0	1m 2s
Test WordPress latest with PHP 8.4	1m 21s
Test WordPress nightly with PHP 8.0	1m 5s
Test WordPress latest with PHP 8.3	1m 6s
	17m 26s

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