manifest: Update sdk-connectedhomeip revision (auto-manifest PR)

Automatically created by action-manifest-pr GH action from PR:
nrfconnect/sdk-connectedhomeip#721

Signed-off-by: Nordic Builder <pylon@nordicsemi.no>

Author: NordicBuilder

west.yml

@@ -156,7 +156,7 @@ manifest:
     - name: matter
       repo-path: sdk-connectedhomeip
       path: modules/lib/matter
-      revision: 50a2175e80c5d6a7752083a08887fa8360ae7a7f
+      revision: pull/721/head
       west-commands: scripts/west/west-commands.yml
       submodules:
         - name: nlio