Add note about ownership

What does this MR do and why?

From a recent discussion in https://gitlab.slack.com/archives/C06AQBJETRR/p1720718004617489, this MR is intended to point out the necessary permissions needed for creating a new release of a component so an updated version is published to the Catalog. The note will also cross-reference the ownership details in https://docs.gitlab.com/ee/development/cicd/components.html#define-ownership.

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.