DX: Cache optimisation #9517

Job	Run time
PHP 7.4 Fixer with lowest deps	1m 23s
PHP 7.4 tests with lowest deps	2m 44s
PHP 8.0 Fixer	1m 16s
PHP 8.0 tests	2m 45s
PHP 8.1 Fixer with Symfony ^6	3m 13s
PHP 8.1 tests with Symfony ^6	2m 48s
PHP 8.2 Fixer	1m 20s
PHP 8.2 tests	3m 16s
PHP 8.3 Fixer	1m 28s
PHP 8.3 tests	3m 4s
PHP 8.3 Fixer with migration rules	2m 16s
PHP 8.3 tests with migration rules	3m 47s
PHP 8.3 Fixer with Symfony ^7	1m 20s
PHP 8.3 tests with Symfony ^7	3m 2s
PHP 8.3 code coverage	4m 38s
PHP 8.3 mutation tests	28s
PHP 8.3 Fixer on Windows	2m 50s
PHP 8.3 tests on Windows	2m 18s
PHP 8.3 Fixer on macOS	2m 22s
PHP 8.3 tests on macOS	2m 1s
PHP 8.4 Fixer	1m 13s
PHP 8.4 tests	3m 51s
Deployment checks (ubuntu-20.04, 8.2)	31s
	53m 54s

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