Merge pull request #20 from simplesamlphp/feature/php83 #462

Job	Run time
Linter / json-linter	29s
PHP-Linter (8.3) / linter	17s
PHP-Linter (8.4) / linter	14s
PHP-Linter (8.5) / linter	16s
Linter / yaml-linter	8s
Linter / style-linter	0s
Linter / ecmascript-linter	0s
Unit tests, PHP 8.5, windows-latest	1m 13s
Unit tests, PHP 8.3, ubuntu-latest	40s
Unit tests, PHP 8.5, ubuntu-latest	36s
Unit tests, PHP 8.4, ubuntu-latest	36s
Unit tests, PHP 8.3, windows-latest	1m 27s
Unit tests, PHP 8.4, windows-latest	1m 27s
Code coverage	8s
Quality control	33s
Security checks	20s
Cleanup artifacts	4s
	8m 28s

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