Adapt for recent PHPStan #226

Job	Run time
Platform test (7.4)	3m 48s
Platform test (8.0)	3m 22s
Platform test (8.1)	3m 2s
Platform test (8.2)	2m 50s
Platform test (8.3)	3m 4s
Platform test (8.4)	3m 5s
Platform test (8.1, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 46s
Platform test (8.2, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 25s
Platform test (8.3, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 37s
Platform test (8.4, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 44s
	29m 43s

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