The ooni/probe-cli#1421 PR trimmed the endpoints and bumped signal's version to v0.2.5.

So we need to ignore versions of signal lower than v0.2.5.

I am wondering whether we should also use a time window because otherwise what happens when we reprocess measurements. If my analysis is correct, then we have an additional issue that there's another check in this codepath that seems to mark signal measurements as failed without any temporal constraints. This would also cause reprocessing to cause downstream issues.

Part of ooni/probe#2636

I discussed this with @hellais and he said I should not be spending too much time in thinking about reprocessing and recommended to use queries to modify the database.

So, I'll change the todo into a caveat.

Fix changelog entry to avoid conflict with: https://github.com/ooni/backend/pull/793/files