Convert E2E infrastructure to ESM #56404

Job	Run time
Determine tests matrix	6s
Check plugin monorepo dep versions	32s
PHP tests: PHP 7.0 WP latest	5m 36s
PHP tests: PHP 7.2 WP latest	5m 21s
PHP tests: PHP 7.3 WP latest	4m 12s
PHP tests: PHP 7.4 WP latest	4m 6s
PHP tests: PHP 8.0 WP latest	5m 52s
PHP tests: PHP 8.1 WP latest	3m 29s
PHP tests: PHP 8.2 WP latest	3m 55s
PHP tests: PHP 5.6 WP previous	5m 52s
PHP tests: PHP 8.2 WP previous	3m 26s
PHP tests: PHP 8.2 WP trunk	5m 27s
PHP tests: PHP 7.4 WP latest with WooCommerce	2m 29s
JS tests	5m 55s
	56m 18s

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