Tests

Bump phpunit/phpunit from 10.5.16 to 10.5.18 #37

Job	Run time
PHP 8.2 on ubuntu-latest w/ install	23s
PHP 8.2 on ubuntu-latest w/ update	20s
PHP 8.2 on windows-latest w/ install	36s
PHP 8.2 on windows-latest w/ update	35s
PHP 8.2 on macOS-latest w/ install	41s
PHP 8.2 on macOS-latest w/ update	40s
PHP 8.3 on ubuntu-latest w/ install	15s
PHP 8.3 on ubuntu-latest w/ update	11s
PHP 8.3 on windows-latest w/ install	29s
PHP 8.3 on windows-latest w/ update	34s
PHP 8.3 on macOS-latest w/ install	39s
PHP 8.3 on macOS-latest w/ update	39s
PHP 8.4 on ubuntu-latest w/ install	12s
PHP 8.4 on ubuntu-latest w/ update	17s
PHP 8.4 on windows-latest w/ install	35s
PHP 8.4 on windows-latest w/ update	30s
PHP 8.4 on macOS-latest w/ install	37s
PHP 8.4 on macOS-latest w/ update	39s
	8m 52s

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