samples: sensor: qdec: change pins used for qdec nrf54h20dk

Change pins that are used for qdec nrf54h20dk to align with shield
(loopbacks) used in internal CI. This change is needed to start
qdec driver power management testing.

Signed-off-by: Piotr Krzyzanowski <piotr.krzyzanowski@nordicsemi.no>
2 files changed