build-appliance-image: Update to poky commit b37dd451a52622d5b570183a81583cc34c2ff555

This update will add improvements to HOB,
fix issues encountered during build.

Fixes [YOCTO #5759].

Signed-off-by: Cristian Iorga <cristian.iorga@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>