Bump dependencies to Kubernetes 1.20

vendor/k8s.io/component-base/metrics/metric.go

@@ -188,9 +188,6 @@ func (c *selfCollector) Collect(ch chan<- prometheus.Metric) {
 // no-op vecs for convenience
 var noopCounterVec = &prometheus.CounterVec{}
 var noopHistogramVec = &prometheus.HistogramVec{}
-
-// lint:ignore U1000 Keep it for future use
-var noopSummaryVec = &prometheus.SummaryVec{}
 var noopGaugeVec = &prometheus.GaugeVec{}
 var noopObserverVec = &noopObserverVector{}