[deploy] Generate Random Health Check Tokens on App Setup (#8178)

Co-authored-by: rhymes <rhymesete@gmail.com>

app/models/site_config.rb

@@ -12,7 +12,7 @@ class SiteConfig < RailsSettings::Base
   cache_prefix { "v1" }
 
   # API Tokens
-  field :health_check_token, type: :string, default: "secret"
+  field :health_check_token, type: :string
 
   # Authentication
   field :authentication_providers, type: :array, default: Authentication::Providers.available

lib/tasks/app_initializer.rake

@@ -14,5 +14,7 @@ namespace :app_initializer do
 
     puts "\n== Updating Data =="
     Rake::Task["data_updates:enqueue_data_update_worker"].execute
+
+    SiteConfig.health_check_token ||= SecureRandom.hex(10)
   end
 end