manifest: Update sdk-nrfxlib revision

Pull in changes related to cleaning up of RPU interface file.

Signed-off-by: Sachin D Kulkarni <[email protected]>

west.yml

@@ -157,7 +157,7 @@ manifest:
     - name: nrfxlib
       repo-path: sdk-nrfxlib
       path: nrfxlib
-      revision: 266e1892897061eb928b3069635996638d89c5fb
+      revision: pull/1401/head
     - name: trusted-firmware-m
       repo-path: sdk-trusted-firmware-m
       path: modules/tee/tf-m/trusted-firmware-m