One fix in the Hetzner provider, no new command and no change to the piped output of the parity cases.

Fixed

• A boolean value in a Hetzner server entry is one hcloud switch. A key such as without-ipv6: true used to reach hcloud server create as --without-ipv6 true, a bare flag followed by a stray argument, so a server could not be created without public IPv6 from the descriptor. A boolean now travels as one --key=true / --key=false token; every other value type is unchanged. Two unit cases pin the shape. The case behind it: on a host whose IPv6 path to a registry black-holes, an image pull sits on an established but dead connection for minutes while the same pull over IPv4 takes seconds; without-ipv6: true on the server makes such a host pull over IPv4 only (#236).

Upgrade

Nothing to do. A descriptor without boolean values renders exactly as before.