Update dependency phpstan/phpstan-strict-rules to v2.0.9 #4074

Job	Run time
PHPUnit tests (development, 8.3, ubuntu-latest)	17s
PHPUnit tests (locked, 8.4, ubuntu-latest)	14s
PHPUnit tests (development, 8.4, ubuntu-latest)	15s
PHPUnit tests (highest, 8.3, ubuntu-latest)	13s
PHPUnit tests on PHP 8 (locked, 8.6, ubuntu-latest)	20s
PHPUnit tests (locked, 8.5, ubuntu-latest)	13s
PHPUnit tests (lowest, 8.5, ubuntu-latest)	20s
PHPUnit tests (development, 8.5, ubuntu-latest)	23s
PHPUnit tests (highest, 8.4, ubuntu-latest)	13s
PHPUnit tests (lowest, 8.3, ubuntu-latest)	14s
PHPUnit tests (locked, 8.3, ubuntu-latest)	19s
PHPUnit tests (highest, 8.5, ubuntu-latest)	13s
PHPUnit tests (lowest, 8.4, ubuntu-latest)	18s
	3m 32s

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