manifest: Update nrf hw models to latest

* Update the HW models module to
ffd0ddec0239a47739892f4e705e97b2285a8508

Including the following:
* ffd0dde HAL: RTC2 for nrf52833 was missing
* 12e66d1 PPI: Connect RTC tasks
* e4f3ab9 TIMER: Fix for CAPTURE task when counter was never started

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