Update workstations-canary.yml (#23617)

Add - path: macos-execute-disable-fleet-desktop.sh to Workstations
(canary) script library

Co-authored-by: Victor Lyuboslavsky <victor.lyuboslavsky@gmail.com>

it-and-security/teams/workstations-canary.yml

@@ -104,6 +104,7 @@ controls:
     grace_period_days: 2
   scripts:
     - path: ../lib/collect-fleetd-logs.sh
+    - path: ../lib/macos-execute-disable-fleet-desktop.sh
     - path: ../lib/macos-see-automatic-enrollment-profile.sh
     - path: ../lib/macos-remove-old-nudge.sh
     - path: ../lib/macos-mdm-migration.sh