Document the release process

[vcanales]

Adds a description of the release process.

Tasks:

• [x] Provide clarity on who is actually able to review and merge.
• [x] Warn against closing release PRs without merging.

[pbking]

Use the git cherry-pick [commit-hash] command to add specific commits to the Release Branch associated with the Release PR.

Does the changelog continue to get updated or does that need to happen manually with cherry-picked branches?

[vcanales]

Use the git cherry-pick [commit-hash] command to add specific commits to the Release Branch associated with the Release PR.

Does the changelog continue to get updated or does that need to happen manually with cherry-picked branches?

Good point, I'll need to add a step that automatically updates the Change Log after new commits are added.