Release notes for version 0.61.0

Release date: 08 Oct 2025

• bump KSM chart version 6.0.* -> 6.3.*
• bump node-exporter chart version 4.47.* -> 4.48.*
• bump grafana chart version 9.2.* -> 9.4.*
• update dashboards and rules
• allow optional scheme at .Values.external.grafana.host. Thanks to @a-bali for initial implementation.
• allow overriding service labels for kubedns, coredns, kube-controller-manager, kube-proxy, kube-scheduler, etcd.
• bump version of VM components to v1.127.0
• replaced python scripts for dashboards and rules templates generation with golang tool, that uses metricsql library instead of regexp to properly update all expressions with additional labels and produces more compact output. Related issue #2281