Merge pull request #1760 from rabbitmq/default-to-4.0.3 #977

Job	Run time
unit and integration tests	3m 18s
Build Operator image	2m 21s
Build single-arch AMD64 image	0s
Build single-arch ARM64 image	0s
Local system tests (stable k8s) (rabbitmq:3.11.0-management)	7m 9s
Local system tests (stable k8s) (rabbitmq:management)	6m 21s
Local system tests (min k8s) (rabbitmq:3.11.0-management)	9m 8s
Local system tests (stable k8s) (pivotalrabbitmq/rabbitmq:main)	6m 51s
Documented example tests	26m 18s
Local system tests (min k8s) (rabbitmq:management)	7m 30s
kubectl rabbitmq tests	3m 5s
Test upgrade of the operator	2m 45s
Release to GitHub Releases	0s
	1h 14m 46s

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