chore: update go mod

go.mod

@@ -13,6 +13,7 @@ require (
 	github.com/go-logr/logr v1.4.1
 	github.com/grafana/synthetic-monitoring-agent v0.19.4
 	github.com/grafana/synthetic-monitoring-api-go-client v0.8.0
+	github.com/karlderkaefer/pingdom-golang-client v1.0.4
 	github.com/kelseyhightower/envconfig v1.4.0
 	github.com/openshift/api v0.0.0-20200526144822-34f54f12813a
 	github.com/patrickmn/go-cache v2.1.0+incompatible
@@ -69,7 +70,6 @@ require (
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect