update node used in cicd to 18 (#3774) #2393

Job	Run time
display-dispatch-event-id	0s
snyk (workloads/instance-env/discovery-statefulset.yaml)	22s
snyk (workloads/instance-env/cleanup-static-definitions-cronjob.yaml)	23s
snyk (workloads/instance-env/gateway-deployment.yaml)	20s
snyk (samples/api-catalog-service.yaml)	34s
snyk (samples/gateway-service-ci.yaml)	19s
snyk (samples/gateway-service-np.yaml)	19s
snyk (samples/gateway-service-lb.yaml)	20s
snyk (samples/horizontal-pod-autoscaler/gateway-hpa.yaml)	24s
snyk (samples/pod-disruption-budget/gateway-pdb.yaml)	19s
snyk (samples/bare-metal/gateway-ingress.yaml)	22s
snyk (samples/openshift/gateway-route.yaml)	23s
snyk (samples/workspace-pvc.yaml)	24s
	4m 29s

Provide feedback