Use composer.json for cache key #3520

Job	Run time
Linter / json-linter	29s
PHP-Linter (8.4) / linter	14s
PHP-Linter (8.3) / linter	16s
PHP-Linter (8.5) / linter	12s
Linter / yaml-linter	6s
Linter / style-linter	-1s
Linter / ecmascript-linter	-1s
Unit tests, PHP 8.4, windows-latest	1m 19s
Unit tests, PHP 8.5, ubuntu-latest	28s
Unit tests, PHP 8.3, windows-latest	1m 11s
Unit tests, PHP 8.4, ubuntu-latest	27s
Unit tests, PHP 8.3, ubuntu-latest	34s
Unit tests, PHP 8.5, windows-latest	1m 10s
Code coverage	8s
Quality control	47s
Security checks	24s
Cleanup artifacts	3s
	7m 46s

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