scripts: memory-threshold: find_my: switchable networks: fix dfu pattern

Fixed the scenario matching pattern in the configuration of the Apple
Find My Switchable Networks sample for the DFU switch variant.

Ref: NCSDK-31920

Signed-off-by: Kamil Piszczek <[email protected]>

Author: kapi-no

scripts/memory-threshold-list.yaml

@@ -60,7 +60,7 @@
     - nrfconnect/ncs-si-bluebagel
 
 - scenarios:
-    - sample.find_my.switchable_networks.release.dfu_switch*
+    - sample.find_my.switchable_networks.release.dfu_switch.*
   platforms:
     - all
   rom_increase: 512