Add more information to ironic-image release notes about changes in underlying Ironic changes

[tuminoid]

Add more information to ironic-image release notes about changes in underlying Ironic changes. For example, diff between v26.0.0 and v26.0.1 show no changes, as we did no changes in the repository, but since we do not PIN the underlying Ironic branch to a commit, but follow a bugfix branch, it contained changes and the vulnerability fix.

This does not mean we should republish Ironic release notes, but at least link to the commit diff from previous tag in Ironic branch.

[Rozzii]

/triage accepted
I don't think there is much to discuss about this the more info we can give the better.

[Rozzii]

For example adding a link to the ironic release notes:
https://docs.openstack.org/releasenotes/ironic/2024.1.html#relnotes-24-1-2-stable-2024-1

[tuminoid]

For example adding a link to the ironic release notes: https://docs.openstack.org/releasenotes/ironic/2024.1.html#relnotes-24-1-2-stable-2024-1

That, and possibly commit range diff URL. For bugfix branches if the release notes are not as clear or available in human readable form, then manual curation would be needed.

[elfosardo]

I think it works the same for bugfix branches, just adding the diff when we do patch releases

[Rozzii]

The approach proposed here was followed in release 27 but the docs were not updated so this can't be closed.
I will move this to the next milestone.