fix(deps): update knative.dev/pkg digest to aaab500

cloudevents-server/go.mod

@@ -134,7 +134,7 @@ require (
 	k8s.io/klog/v2 v2.70.2-0.20220707122935-0990e81f1a8f // indirect
 	k8s.io/kube-openapi v0.0.0-20220124234850-424119656bbf // indirect
 	k8s.io/utils v0.0.0-20220210201930-3a6ce19ff2f9 // indirect
-	knative.dev/pkg v0.0.0-20220805012121-7b8b06028e4f
+	knative.dev/pkg aaab500c26c4
 	sigs.k8s.io/json v0.0.0-20211208200746-9f7c6b3444d2 // indirect
 	sigs.k8s.io/structured-merge-diff/v4 v4.2.1 // indirect
 	sigs.k8s.io/yaml v1.3.0 // indirect