Fix PHPUnit warning #27631

Job	Run time
Compiler Tests	2m 8s
integration-tests / Check PHAR checksum	14s
other-tests / Check PHAR checksum	10s
extension-tests / Check PHAR checksum	11s
Commit PHAR	0s
PHAR Prefix Diff	0s
Download base SHA PHAR	-1s
Checksum PHAR	-1s
other-tests / Other Tests	0s
extension-tests / ${{ matrix.extension-name }} (${{ matrix.php-version }}) ${{ matrix.script }}	0s
integration-tests / Integration - ${{ matrix.name }}	0s
integration-tests / Integration - ${{ matrix.repo }}	-1s
integration-tests / Integration - Update baselines	-1s
integration-tests / PMMP Tests	-1s
	2m 38s

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