Schedule Slack channel updates for OCM releases (Official Kubernetes Workspace)

[morri-son]

Description
There should be an automatic post in the #open-component-model Slack channel in the Kubernetes workspace that contains the release notes, maybe in a nice format like the ones from the Gardener team.

For integration of GitHub with the Slack channel in the Kubernetes workspace, there is a strict process to be followed and an issue temple: GitHub Issue. The process states that requests are rarely approved, but also states that GitHub is approved, though it's not 100% clear what exactly is meant by that...

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Bots, tokens, and webhooks are reviewed on a case-by-case basis with most requests being rejected due to security, privacy, and usability concerns. Bots and the like tend to make a lot of noise in channels. The Kubernetes Slack instance has over 145,000 members and it is the role of the Slack admins to ensure everyone has a great experience.

Typically approved requests include: GitHub, CNCF requests, or other tools/platforms used to aid in the management of Slack itself.