Update db connections pool size (#1088)

Author: rodrieiz

config/database.yml

@@ -1,7 +1,7 @@
 default: &default
   adapter: postgresql
   encoding: unicode
-  pool: 5
+  pool: 100
   username: <%= ENV.fetch('POSTGRES_USER', 'postgres') %>
   password: <%= ENV.fetch('POSTGRES_PASSWORD', 'postgres') %>
   host: <%= ENV.fetch('POSTGRES_HOST', 'localhost') %>