Bump minimum PHP version, replace super-linter #161

Job	Run time
PHP-Linter (8.5) / linter	9s
PHP-Linter (8.3) / linter	11s
Linter / yaml-linter	4s
Linter / style-linter	15s
PHP-Linter (8.4) / linter	11s
Linter / ecmascript-linter	17s
Linter / json-linter	27s
Unit tests, PHP 8.5, ubuntu-latest	20s
Unit tests, PHP 8.4, ubuntu-latest	23s
Unit tests, PHP 8.3, windows-latest	1m 2s
Unit tests, PHP 8.3, ubuntu-latest	25s
Unit tests, PHP 8.5, windows-latest	1m 4s
Unit tests, PHP 8.4, windows-latest	1m 0s
Quality control	45s
Security checks	17s
Code coverage	8s
Cleanup artifacts	3s
	7m 1s

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