New Blog Post: [collector] Announce the replacement of k8s utilization metrics

[ChrsMark]

The Opentelemetry Collector and specifically the kubeletstats receiver is going to replace/deprecate some previously enabled by-default metrics. The code-owners of the component would like to communicate this change with users beforehand so as to better prepare the ground for this change. Would a blog-post help with that?

ref: open-telemetry/opentelemetry-collector-contrib#39650 (comment)

This is part of a long ongoing effort: open-telemetry/opentelemetry-collector-contrib#27885

Title of the blog post: (Tentative) Announce the replacement of k8s utilization metrics

Content: (Will be relatively short) Explain the reason behind this change and how users will need to adopt their Collector installations

Related SIG: Collector SIG

/cc @TylerHelmuth @dmitryax @odubajDT

[svrnm]

Yes, we can have a blog post for this, announcing breaking changes is always a good idea and we had those in the past already 👍