Add ksonnet4 with ksonnet.beta.4 and update all imports

jsonnet/kube-prometheus/alertmanager/alertmanager.libsonnet

jsonnet/kube-prometheus/jsonnetfile.json

...t/kube-prometheus/kube-prometheus-anti-affinity.libsonnet

jsonnet/kube-prometheus/kube-prometheus-bootkube.libsonnet

...et/kube-prometheus/kube-prometheus-kops-coredns.libsonnet

jsonnet/kube-prometheus/kube-prometheus-kops.libsonnet

jsonnet/kube-prometheus/kube-prometheus-kube-aws.libsonnet

jsonnet/kube-prometheus/kube-prometheus-kubeadm.libsonnet

jsonnet/kube-prometheus/kube-prometheus-kubespray.libsonnet

jsonnet/kube-prometheus/kube-prometheus-node-ports.libsonnet

...net/kube-prometheus/kube-prometheus-static-etcd.libsonnet

jsonnet/kube-prometheus/kube-prometheus-thanos.libsonnet

jsonnet/kube-prometheus/kube-prometheus.libsonnet

...rometheus/kube-state-metrics/kube-state-metrics.libsonnet

...net/kube-prometheus/node-exporter/node-exporter.libsonnet

...rometheus/prometheus-adapter/prometheus-adapter.libsonnet

jsonnet/kube-prometheus/prometheus/prometheus.libsonnet

jsonnetfile.lock.json