Vuln-dash: Update sails app configuration in docker-compose.yml (#19686)

Changes:
- Updated the vulnerability dashboard configuration for the dockerized
version to make sure it uses the `safe` migration strategy

ee/vulnerability-dashboard/docker-compose.yml

@@ -12,6 +12,7 @@ services:
       sails_datastores__default__adapter: sails-postgresql
       sails_sockets__url: redis://redis:6379
       sails_session__url: redis://redis:6379
+      sails_models__migrate: safe
       sails_custom__fleetBaseUrl: '' #Add the base url of your Fleet instance: ex: https://fleet.example.com
       sails_custom__fleetApiToken: '' # Add the API token of an API-only user [?] Here's how you get one: https://fleetdm.com/docs/using-fleet/fleetctl-cli#get-the-api-token-of-an-api-only-user
       sails_custom__fleetApiOptionalCookie: ''  # If your fleet instance requires optional cookies, use this to interact with the APIs