manifest: update sidewalk revision

mcuboot size changes

Signed-off-by: Krzysztof Taborowski <[email protected]>

Author: ktaborowski

west.yml

@@ -206,7 +206,7 @@ manifest:
           compare-by-default: false
     - name: sidewalk
       repo-path: sdk-sidewalk
-      revision: v2.9.0-rc1
+      revision: pull/652/head
       groups:
         - sidewalk
     - name: find-my