Host Talos mounts machined socket for API access into the installer
container (for upgrades).
Installer runs any check it might need to verify compatibility.
At the moment following checks are implemented:
* Talos version (whether upgrade from version X to Y is supported)
* Kubernetes version (whether Kubernetes version X is supported with
Talos Y).
Fixes#6149
Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>
