Bump google.golang.org/grpc from 1.66.0 to 1.66.2 #2445

Job	Run time
Unit Test (knative/serving)	10m 6s
Unit Test (knative/networking)	4m 6s
Unit Test (knative/eventing)	11m 57s
Unit Test (knative/operator)	6m 37s
Unit Test (knative/client)	6m 34s
Unit Test (knative-extensions/eventing-autoscaler-keda)	4m 54s
Unit Test (knative-extensions/eventing-ceph)	4m 55s
Unit Test (knative-extensions/eventing-github)	5m 53s
Unit Test (knative-extensions/eventing-gitlab)	5m 39s
Unit Test (knative-extensions/eventing-kafka-broker)	8m 46s
Unit Test (knative-extensions/eventing-rabbitmq)	5m 11s
Unit Test (knative-extensions/eventing-redis)	5m 20s
Unit Test (knative-extensions/kn-plugin-admin)	14m 24s
Unit Test (knative-extensions/net-certmanager)	4m 33s
Unit Test (knative-extensions/net-contour)	4m 58s
Unit Test (knative-extensions/net-istio)	5m 9s
Unit Test (knative-extensions/net-kourier)	4m 43s
	1h 53m 45s

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