Tests and linting #1384

Job	Run time
Code style and static analysis	38s
Markdown link check	24s
PHP 8.0	38s
PHP 8.3	38s
PHP 8.2	36s
PHP 8.4	40s
PHP 8.0 --prefer-lowest --prefer-stable	41s
PHP 8.1	36s
tests-finished	6s
	4m 57s

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