Update yoast/phpunit-polyfills requirement from 2.* to 4.* in the dev-dependencies group #127

Job	Run time
PHPMD (PHP 8.3)	14s
PHPStan for WP (PHP 8.3)	15s
WP Plugin Check (PHP 8.3)	1m 56s
Psalm Static Analysis (PHP 8.3)	21s
PHPCS (PHP 8.3)	23s
Security Scan (PHP 8.3)	18s
WP VIP CS (PHP 8.3)	26s
Test WordPress latest with PHP 8.0	1m 11s
Test WordPress 6.6 with PHP 7.4	1m 26s
Test WordPress latest with PHP 7.4	1m 3s
Test WordPress nightly with PHP 8.1	1m 9s
Test WordPress nightly with PHP 7.4	1m 2s
Test WordPress nightly with PHP 8.2	59s
Test WordPress 6.6 with PHP 8.1	1m 16s
Test WordPress nightly with PHP 8.0	1m 9s
Test WordPress latest with PHP 8.1	1m 19s
Test WordPress 6.6 with PHP 8.0	1m 12s
Test WordPress 6.6 with PHP 8.2	58s
Test WordPress latest with PHP 8.2	1m 13s
Test WordPress latest with PHP 8.5	1m 15s
Test WordPress 6.6 with PHP 8.4	1m 10s
Test WordPress 6.6 with PHP 8.3	58s
Test WordPress nightly with PHP 8.3	1m 12s
Test WordPress latest with PHP 8.4	1m 17s
Test WordPress nightly with PHP 8.4	1m 4s
Test WordPress nightly with PHP 8.5	1m 6s
Test WordPress 6.6 with PHP 8.5	2m 16s
Test WordPress latest with PHP 8.3	1m 0s
	29m 8s

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