Use composer.json for cache key #379

Job	Run time
Quality control	39s
Linter / ecmascript-linter	16s
Linter / json-linter	23s
PHP-Linter (8.4) / linter	10s
Linter / yaml-linter	4s
PHP-Linter (8.5) / linter	11s
PHP-Linter (8.3) / linter	11s
Linter / style-linter	-1s
Unit tests, PHP 8.3, ubuntu-latest	23s
Unit tests, PHP 8.3, windows-latest	59s
Unit tests, PHP 8.4, ubuntu-latest	23s
Unit tests, PHP 8.4, windows-latest	1m 9s
Unit tests, PHP 8.5, windows-latest	1m 25s
Unit tests, PHP 8.5, ubuntu-latest	21s
Security checks	20s
Code coverage	8s
Cleanup artifacts	5s
	7m 6s

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