Enable using glab for CI release

Furkan Ayhanrequested to merge
524346-enable-ff-ci_glab_for_release into master

What does this MR do and why?

Enable using glab for CI release

This feature flag is already enabled on SaaS. Now, we are enabling it for self-hosted.

In the next milestone, we'll remove the feature flag and make documentation changes.

References

Related to #524346 (closed)

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