Bump phpstan/phpstan from 1.11.11 to 1.12.0 in the phpstan group #9438

Job	Run time
Code Style checks	31s
ShellCheck	8s
PHP 8.1 / Generated Code consistency checks	16s
PHP 8.1 / Integration tests	30s
PHP 8.1 / PHPStan analysis	1m 21s
PHP 8.1 / PHPUnit tests	16s
PHP 8.2 / Generated Code consistency checks	16s
PHP 8.2 / Integration tests	25s
PHP 8.2 / PHPStan analysis	1m 26s
PHP 8.2 / PHPUnit tests	15s
PHP 8.3 / Generated Code consistency checks	15s
PHP 8.3 / Integration tests	23s
PHP 8.3 / PHPStan analysis	1m 26s
PHP 8.3 / PHPUnit tests	28s
	7m 56s

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