[Tracking]: Docker 25 drops devicemapper storage driver

[krnowak]

We haven't yet updated docker to version 25, but I tried doing it last week. Kola test checking for devicemapper storage driver failed, so went with latest 24 patch release instead.

• update docker to 25 (docker: upgrade to 26.1.0 scripts#2152)
• update kola devicemapper storage driver test to run until some version (docker: do not run device mapper test mantle#542)
• yell in changelogs, release notes and everywhere about device mapper going away on Flatcar really soon
• anything else?

[krnowak]

See https://docs.docker.com/engine/deprecated/#device-mapper-storage-driver

[t-lo]

I've started tracking Docker upgrade status in our flatcar dev syncs and added a section to the agenda template that also discusses what's being removed. Docker 27 is out so actually we could upgrade to 27 directly...

#1486

[tormath1]

Done here: flatcar/scripts#2152