Bump go.uber.org/automaxprocs from 1.5.3 to 1.6.0 #2450

Job	Run time
Unit Test (knative/serving)	9m 38s
Unit Test (knative/networking)	4m 5s
Unit Test (knative/eventing)	12m 12s
Unit Test (knative/operator)	7m 52s
Unit Test (knative/client)	6m 37s
Unit Test (knative-extensions/eventing-autoscaler-keda)	4m 51s
Unit Test (knative-extensions/eventing-ceph)	5m 0s
Unit Test (knative-extensions/eventing-github)	5m 48s
Unit Test (knative-extensions/eventing-gitlab)	5m 0s
Unit Test (knative-extensions/eventing-kafka-broker)	9m 24s
Unit Test (knative-extensions/eventing-rabbitmq)	5m 3s
Unit Test (knative-extensions/eventing-redis)	5m 26s
Unit Test (knative-extensions/kn-plugin-admin)	14m 36s
Unit Test (knative-extensions/net-certmanager)	4m 32s
Unit Test (knative-extensions/net-contour)	4m 57s
Unit Test (knative-extensions/net-istio)	5m 35s
Unit Test (knative-extensions/net-kourier)	4m 51s
	1h 55m 27s

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