manifest: Update sdk-find-my revision

Updated sdk-find-my revision to bring backport of Apple Find My
add-on release notes for NCS 3.1.

Signed-off-by: Mateusz Kapala <[email protected]>

Author: mkapala-nordic

west.yml

@@ -200,7 +200,7 @@ manifest:
           compare-by-default: false
     - name: find-my
       repo-path: sdk-find-my
-      revision: v3.1.0-rc2
+      revision: 261b65822f55bc4c31174ff55a0447f13b5666dc
       groups:
         - find-my
     - name: azure-sdk-for-c