manifest: Fetch latests nrf52 HW models w 802.15.4 support

Update to the latest nrf52 HW models which include
a multitude of updates, including support for 802.15.4 in the
radio.

NOTE!: Requires the updated Babblesim v2 dev-phy API,
with the new Rx continuation on header evaluation mechanism.

Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>