Fix github action for dependabot #1974

Job	Run time
Unit Test (knative/serving)	15m 18s
Unit Test (knative/networking)	7m 46s
Unit Test (knative/eventing)	23m 40s
Unit Test (knative/operator)	9m 51s
Unit Test (knative/client)	11m 52s
Unit Test (knative-sandbox/eventing-autoscaler-keda)	7m 22s
Unit Test (knative-sandbox/eventing-ceph)	7m 44s
Unit Test (knative-sandbox/eventing-github)	8m 59s
Unit Test (knative-sandbox/eventing-gitlab)	9m 22s
Unit Test (knative-sandbox/eventing-kafka)	12m 33s
Unit Test (knative-sandbox/eventing-kafka-broker)	17m 39s
Unit Test (knative-sandbox/eventing-rabbitmq)	14m 27s
Unit Test (knative-sandbox/eventing-redis)	8m 54s
Unit Test (knative-sandbox/kn-plugin-admin)	9m 22s
Unit Test (knative-sandbox/net-certmanager)	7m 5s
Unit Test (knative-sandbox/net-contour)	7m 50s
Unit Test (knative-sandbox/net-http01)	7m 43s
Unit Test (knative-sandbox/net-istio)	9m 37s
Unit Test (knative-sandbox/net-kourier)	7m 23s
	3h 24m 27s

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