manifest: Update sdk-mcuboot, sdk-zephyr and sdk-connectedhomeip

Removes support for child/parent image from these repos

Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>

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: a7fe5f7c4aab18312bd7f61afef55647e38f3db6
+      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: v2.1.0-ncs3-rc1
+      revision: pull/386/head
       path: bootloader/mcuboot
     - name: qcbor
       url: https://github.com/laurencelundblade/QCBOR
@@ -159,7 +159,7 @@ manifest:
     - name: matter
       repo-path: sdk-connectedhomeip
       path: modules/lib/matter
-      revision: a0d2cc5b2164aa145284a6f0de5adbca837ea972
+      revision: pull/520/head
       west-commands: scripts/west/west-commands.yml
       submodules:
         - name: nlio