Update shipmonk/phpstan-rules requirement from 3.0.0 to 3.1.0 in the phpstan group #542

Job	Run time
PHP 7.4	23s
PHP 7.4 --prefer-stable --prefer-lowest	18s
PHP 8	19s
PHP 8 --prefer-stable --prefer-lowest	23s
PHP 8.1	22s
PHP 8.1 --prefer-stable --prefer-lowest	14s
PHP 8.2	15s
PHP 8.2 --prefer-stable --prefer-lowest	23s
PHP 8.3	13s
PHP 8.3 --prefer-stable --prefer-lowest	18s
Code Coverage	26s
Code Style	15s
	3m 49s

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