Addon cloud-spanner: Update cloud-spanner-emulator/emulator image fro… #3438

Job	Run time
build_minikube_test_binaries	4m 9s
build_minikube	7m 42s
lint	2m 36s
unit_test	2m 31s
functional_docker_ubuntu	6m 49s
functional_docker_containerd_ubuntu	6m 45s
functional_baremetal_ubuntu22_04	5m 9s
functional_podman_ubuntu	7m 25s
functional_docker_rootless_containerd_ubuntu	8m 4s
upload_all_reports	14s
	51m 24s

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