bump k8s deps to v0.30.3 #2435

Job	Run time
Unit Test (knative/serving)	9m 32s
Unit Test (knative/networking)	4m 9s
Unit Test (knative/eventing)	11m 28s
Unit Test (knative/operator)	6m 41s
Unit Test (knative/client)	6m 56s
Unit Test (knative-extensions/eventing-autoscaler-keda)	5m 24s
Unit Test (knative-extensions/eventing-ceph)	4m 49s
Unit Test (knative-extensions/eventing-github)	5m 30s
Unit Test (knative-extensions/eventing-gitlab)	5m 36s
Unit Test (knative-extensions/eventing-kafka-broker)	8m 32s
Unit Test (knative-extensions/eventing-rabbitmq)	4m 56s
Unit Test (knative-extensions/eventing-redis)	5m 28s
Unit Test (knative-extensions/kn-plugin-admin)	14m 25s
Unit Test (knative-extensions/net-certmanager)	4m 28s
Unit Test (knative-extensions/net-contour)	4m 55s
Unit Test (knative-extensions/net-istio)	5m 4s
Unit Test (knative-extensions/net-kourier)	4m 51s
	1h 52m 44s

Provide feedback