feat: Add PHP 8.4 support #158

Job	Run time
Deploy OpenStack bobcat and run integration tests with php 8.1	19m 7s
Deploy OpenStack bobcat and run integration tests with php 8.1	19m 7s
Deploy OpenStack dalmatian and run integration tests with php	20m 10s
Deploy OpenStack dalmatian and run integration tests with php	20m 10s
Deploy OpenStack caracal and run integration tests with php	18m 46s
Deploy OpenStack caracal and run integration tests with php	18m 46s
Deploy OpenStack antelope and run integration tests with php	3m 40s
Deploy OpenStack antelope and run integration tests with php	3m 23s
Deploy OpenStack zed and run integration tests with php	18m 23s
Deploy OpenStack zed and run integration tests with php	18m 23s
Deploy OpenStack yoga and run integration tests with php	18m 45s
Deploy OpenStack yoga and run integration tests with php	18m 45s
Deploy OpenStack wallaby and run integration tests with php	19m 34s
Deploy OpenStack wallaby and run integration tests with php	19m 34s
	3h 56m 33s

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