Add support for PHPunit 13 #476

Job	Run time
Linter / json-linter	26s
PHP-Linter (8.4) / linter	14s
PHP-Linter (8.5) / linter	13s
Linter / yaml-linter	7s
PHP-Linter (8.3) / linter	15s
Linter / ecmascript-linter	0s
Linter / style-linter	0s
Unit tests, PHP 8.5, windows-latest	1m 10s
Unit tests, PHP 8.4, windows-latest	1m 11s
Unit tests, PHP 8.3, windows-latest	1m 6s
Unit tests, PHP 8.4, ubuntu-latest	30s
Unit tests, PHP 8.3, ubuntu-latest	32s
Unit tests, PHP 8.5, ubuntu-latest	30s
Security checks	0s
Quality control	0s
Code coverage	0s
Cleanup artifacts	0s
	6m 14s

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