Openwrt and Hetzner DDNS

@Christopher Obbard - I saw that you were comitting changes to #openwrt in Feb to include #Hetzner as a #DDNS option. I posted this in the Openwrt Forum but ...

@abeorch hi, with latest openwrt stable it just works, you can choose hetzner cloud as an option :-)
@obbardc So that's 25.12.1? - That would be great. I'll be putting into my test machine as soon as I get home then.
@abeorch yeah, I'm running 25.12 and it works out of the box!