Test testbench multitenancy - do not merge #18428

Job	Run time
Run PM4-workflow / build-docker-image-EKS	14m 20s
Run PM4-workflow / Delete Instance	0s
Run PM4-workflow / run-phpunit	-1s
Run PM4-workflow / Smoke Test (CI${{ matrix.site_number }})	-1s
Run PM4-workflow / deploy-EKS	-1s
Run PM4-workflow / Run API Tests	-1s
	14m 16s

Provide feedback