[CI] docs: Configure docs publish for releases

[frascuchon]

This PR reviews the workflow for publishing docs:

• A merge to the main (release/stable branch) will deploy docs latest version.
• A tag creation (tag pattern = v*) will deploy vX.Y.Z version. (we can iterate on this and keep just the minor version)

[davidberenstein1957]

Some small changes.

• let's not deplot docs/ now
• deploy a develop version with latest changes but not set this as default
• deploy new versions on release tags and set it to the latest tag by default.

[frascuchon]

Some small changes.

• let's not deplot docs/ now

:+1 I've removed conditions for that!

• deploy a develop version with latest changes but not set this as default

Normally the latest docs refer to the latest release. We already have the dev version for this.

• deploy new versions on release tags and set it to the latest tag by default.

We can have version problems publishing patch releases. The latest changes for docs will be on the last commit on main.