Bump github.com/openzipkin/zipkin-go from 0.3.0 to 0.4.1 #2002

Job	Run time
Unit Test (knative/serving)	19m 16s
Unit Test (knative/networking)	8m 12s
Unit Test (knative/eventing)	20m 2s
Unit Test (knative/operator)	9m 58s
Unit Test (knative/client)	10m 40s
Unit Test (knative-extensions/eventing-autoscaler-keda)	7m 23s
Unit Test (knative-extensions/eventing-ceph)	7m 7s
Unit Test (knative-extensions/eventing-github)	10m 0s
Unit Test (knative-extensions/eventing-gitlab)	8m 46s
Unit Test (knative-extensions/eventing-kafka)	8m 46s
Unit Test (knative-extensions/eventing-kafka-broker)	14m 9s
Unit Test (knative-extensions/eventing-rabbitmq)	15m 28s
Unit Test (knative-extensions/eventing-redis)	9m 17s
Unit Test (knative-extensions/kn-plugin-admin)	9m 17s
Unit Test (knative-extensions/net-certmanager)	6m 54s
Unit Test (knative-extensions/net-contour)	7m 30s
Unit Test (knative-extensions/net-http01)	6m 35s
Unit Test (knative-extensions/net-istio)	10m 57s
Unit Test (knative-extensions/net-kourier)	10m 2s
	3h 20m 19s

Provide feedback