manifest: update sdk-nrfxlib revision

The cpuapp suffix is added when searching for nRF54L20 libraries.

Signed-off-by: Rafał Kuźnia <rafal.kuznia@nordicsemi.no>

west.yml

@@ -160,7 +160,7 @@ manifest:
     - name: nrfxlib
       repo-path: sdk-nrfxlib
       path: nrfxlib
-      revision: 9e4d3e4639956c332b95d66093bc641f1addd9c3
+      revision: pull/1423/head
     - name: trusted-firmware-m
       repo-path: sdk-trusted-firmware-m
       path: modules/tee/tf-m/trusted-firmware-m