manifest: Update sdk-mcuboot and sdk-zephyr

Removes support for child/parent image from these repos

Signed-off-by: Jamie McCrae <[email protected]>

west.yml

@@ -69,7 +69,7 @@ manifest:
     # https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/guides/modules.html
     - name: zephyr
       repo-path: sdk-zephyr
-      revision: 15ffa301b3294a769752ad0a1d382bce9803f265
+      revision: pull/2343/head
       import:
         # In addition to the zephyr repository itself, NCS also
         # imports the contents of zephyr/west.yml at the above
@@ -130,7 +130,7 @@ manifest:
           compare-by-default: true
     - name: mcuboot
       repo-path: sdk-mcuboot
-      revision: ed0fc24030f3765cfb04a8fdd8771bd5078107a7
+      revision: pull/386/head
       path: bootloader/mcuboot
     - name: qcbor
       url: https://github.com/laurencelundblade/QCBOR