manifest: update sdk-mcuboot to have fix for DPPI channels cleanup

Updated sdk-mcuboot fixes missing DPPI channel cleanup.

Signed-off-by: Nikodem Kastelik <nikodem.kastelik@nordicsemi.no>

Author: nika-nordic

west.yml

@@ -127,7 +127,7 @@ manifest:
           compare-by-default: true
     - name: mcuboot
       repo-path: sdk-mcuboot
-      revision: 735d976eff46735d6e7ccbd6d350bb1a17265d6d
+      revision: pull/589/head
       path: bootloader/mcuboot
     - name: qcbor
       url: https://github.com/laurencelundblade/QCBOR