Bump minimum PHP version, replace super-linter #186

Job	Run time
Linter / json-linter	31s
Linter / yaml-linter	5s
PHP-Linter (8.3) / linter	12s
PHP-Linter (8.5) / linter	13s
PHP-Linter (8.4) / linter	15s
Linter / ecmascript-linter	0s
Linter / style-linter	0s
Unit tests, PHP 8.4, ubuntu-latest	21s
Unit tests, PHP 8.3, windows-latest	1m 36s
Unit tests, PHP 8.4, windows-latest	1m 24s
Unit tests, PHP 8.5, ubuntu-latest	26s
Unit tests, PHP 8.3, ubuntu-latest	37s
Unit tests, PHP 8.5, windows-latest	1m 5s
Security checks	26s
Code coverage	6s
Quality control	27s
Cleanup artifacts	3s
	7m 47s

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