prometheus-operator-app release v0.3.0

Changed

• Fix kubelet service name in the Prometheus Operator deployment
• Update Prometheus Operator to 0.38.1
• Update Prometheus to 2.17.2
• Update Alert manager to 0.20.0
• Update Grafana chart to 5.0.25
• Update kube-state-metrics chart to 2.8.5
• Update prometheus-node-exporter chart to 1.9.1
• Rename to prometheus-operator-app