Move dependency to main section

go.mod

@@ -20,6 +20,7 @@ require (
 	k8s.io/cli-runtime v0.25.2
 	k8s.io/client-go v0.25.4
 	k8s.io/code-generator v0.25.4
+	knative.dev/client-pkg v0.0.0-20230524014834-83c91f47f64f
 	knative.dev/eventing v0.37.0
 	knative.dev/hack v0.0.0-20230417170854-f591fea109b3
 	knative.dev/networking v0.0.0-20230419144338-e5d04e805e50
@@ -28,8 +29,6 @@ require (
 	sigs.k8s.io/yaml v1.3.0
 )
 
-require knative.dev/client-pkg v0.0.0-20230524014834-83c91f47f64f
-
 require (
 	cloud.google.com/go/compute v1.10.0 // indirect
 	contrib.go.opencensus.io/exporter/ocagent v0.7.1-0.20200907061046-05415f1de66d // indirect