Release candidate pipeline fails if there's no new commit

[abailly]

As demonstrated by this failure and the previous ones from 2024-12-20, the rc pipeline breaks when there's no new commit.
https://buildkite.com/cardano-foundation/cardano-wallet-release/builds/605#01941402-134c-4a3e-829f-f984e5dc3708

This should not be the case obviously. Several possible solutions sprint to my mind:

• Simply ignore the pipeline if there's no change (bonus point: if the previous rc pipeline is red, try again with retag)
• Retag the previous build's artifacts (seem complicated?)
• Relaunch pipeline with same commit but different tag

[abailly]

So the real problem is that the script reads the date of the latest release from the tags, which in this case was v2024-12-20 but unfortunately this release never happened because of an issue in bump.sh portal which did not display correctly the version tag. I will just remove the tag from the remote and the RC pipeline should proceed normally.

[paolino]

I think it should fail. We cannot release the same day because of our (no comment) versioning choice. #4936 clear this error.