Upgrade Solid Queue (#31)

Two step upgrade; migrations combined since zero downtime not relevant.

Reviewed-on: #31

config/environments/production.rb

@@ -70,6 +70,8 @@ Rails.application.configure do
 
   # Use a real queuing backend for Active Job (and separate queues per environment).
   config.active_job.queue_adapter = :solid_queue
+  config.solid_queue.connects_to = { database: { writing: :queue } }
+
   # config.active_job.queue_name_prefix = "family_budget_production"
 
   # Disable caching for Action Mailer templates even if Action Controller