refactor(l1,l2): release workflow

[ManuelBilbao]

Motivation

We are deploying releases without the ability to test them before.

Description

The new workflow is:

• All new versions should be tagged as RC first (e.g., v6.0.0-rc.1).
• The CI will compile binaries and docker images, and will create a pre-release in Github.
• New RC can be made and the process will repeat.
• Once the binaries were confirmed to work, the pre-release needs to be edited, changing the name and creating a new tag without the "subversion" (e.g., v6.0.0). Also, the release should be set to latest now.
• The CI will upload the previous compiled docker images with new tags latest and final version.

Changelog was improved too. Now it takes commits since the first common parent of the previous version (not RC)

[Copilot]

Pull Request Overview

This PR refactors the release workflow to implement a two-stage release process where RC (release candidate) versions are tested before final releases. RC versions are first tagged, compiled, and published as pre-releases. After testing, the release is manually edited to create the final version tag, triggering automatic retagging of Docker images with latest and final version tags.

Key Changes:

• RC versions are now always published as pre-releases instead of conditionally based on tag suffix
• Changelog generation improved to use commits since first common parent of previous stable version
• New workflow added to handle Docker image retagging when releases are edited from RC to final versions

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
.github/workflows/tag_release.yaml	Simplified tag matching pattern, removed conditional logic for RC vs stable releases, modified changelog generation to find previous stable version and common parent, set all releases as pre-releases
.github/workflows/tag_latest.yaml	New workflow that triggers on release edits, retrieves latest release tag, and retags Docker images with final version and latest tags

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