Bump minimum PHP version, replace super-linter #158

Job	Run time
Linter / yaml-linter	6s
Linter / ecmascript-linter	17s
PHP-Linter (8.5) / linter	12s
PHP-Linter (8.4) / linter	12s
Linter / style-linter	15s
Linter / json-linter	27s
PHP-Linter (8.3) / linter	10s
Unit tests, PHP 8.4, ubuntu-latest	26s
Unit tests, PHP 8.3, ubuntu-latest	25s
Unit tests, PHP 8.5, ubuntu-latest	24s
Unit tests, PHP 8.3, windows-latest	1m 6s
Unit tests, PHP 8.4, windows-latest	57s
Unit tests, PHP 8.5, windows-latest	1m 8s
Quality control	38s
Code coverage	8s
Security checks	18s
Cleanup artifacts	3s
	7m 12s

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