Test testbench multitenancy - do not merge #18385

Job	Run time
Run PM4-workflow / build-docker-image-EKS	7s
Run PM4-workflow / Delete Instance	0s
Run PM4-workflow / deploy-EKS	18m 19s
Run PM4-workflow / run-phpunit	25m 57s
Run PM4-workflow / Smoke Test (CI1)	1m 3s
Run PM4-workflow / Run API Tests	0s
	45m 26s

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