*: Update busybox versions and cron

[matej-g]

• I added CHANGELOG entry for this change.
• Change is not relevant to the end user.

Changes

Manually update busybox versions.

Also make the cronjob more frequent (every hour), since in case of change we might have to wait up to a day before we catch the change, causing CI failures etc.

[douglascamata]

@matej-g I would like to challenge this "automated manual" update of the https://quay.io/prometheus/busybox image tags. I did some quick investigation in the Prometheus repo and they don't have a similar flow.

Do we have a good reason for doing this in Thanos? Was there ever an issue which this flow solved?

[jacobbaungard]

@matej-g I would like to challenge this "automated manual" update of the https://quay.io/prometheus/busybox image tags. I did some quick investigation in the Prometheus repo and they don't have a similar flow.

Do we have a good reason for doing this in Thanos? Was there ever an issue which this flow solved?

It breaks e2e tests as the old images tags seems to be removed, see for example the failures here: #6228

[douglascamata]

@jacobbaungard if we used the latest tag, like Prometheus uses in their own repo, we wouldn't have this issue. My point is: why aren't we using latest to avoid the need for this automation and the temporary problems it causes?

[fpetkovski]

Hm seems like we're blocked on #6236 as well.

[matej-g]

@douglascamata can we first fix current way, so at least all pending PRs (and release) are unblocked? If you'd like to learn more about the history of the issue, feel free to take a look at #4949.

[douglascamata]

@matej-g 100%. Let's unblock all the PRs 🚀

[douglascamata]

@matej-g @fpetkovski shall we merge this? 🙏

[fpetkovski]

And so it shall be merged 🚢

[douglascamata]

Thanks, everyone! 🙇