manifest: nrfxlib with tweaked nrf_802154

The nrfxlib is updated to the revision containing the updated
nRF 802.15.4 Radio Driver that reduces some flash usage on
nRF53 Series.

Signed-off-by: Andrzej Kuros <andrzej.kuros@nordicsemi.no>

Author: ankuns

west.yml

@@ -131,7 +131,7 @@ manifest:
     - name: nrfxlib
       repo-path: sdk-nrfxlib
       path: nrfxlib
-      revision: v2.4.3
+      revision: pull/1442/head
     - name: trusted-firmware-m
       repo-path: sdk-trusted-firmware-m
       path: modules/tee/tf-m/trusted-firmware-m