manifest: update sdk-zephyr and nrfxlib

Update `sdk-zephyr` and `nrfxlib` with Zigbee removal changes.

Signed-off-by: Eduardo Montoya <eduardo.montoya@nordicsemi.no>

Author: edmont

west.yml

@@ -65,7 +65,7 @@ manifest:
     # https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/guides/modules.html
     - name: zephyr
       repo-path: sdk-zephyr
-      revision: c9113a87822e123bd287568c957d92b35502e5d1
+      revision: pull/2655/head
       import:
         # In addition to the zephyr repository itself, NCS also
         # imports the contents of zephyr/west.yml at the above
@@ -144,7 +144,7 @@ manifest:
     - name: nrfxlib
       repo-path: sdk-nrfxlib
       path: nrfxlib
-      revision: fcf28d82f64f1e21dbcd6a436cc77bc9ee0537eb
+      revision: pull/1684/head
     - name: trusted-firmware-m
       repo-path: sdk-trusted-firmware-m
       path: modules/tee/tf-m/trusted-firmware-m