fix: quote production db config vars

Author: jamezrin

config/database.yml

@@ -49,8 +49,8 @@ test:
 #
 production:
   <<: *default
-  database: <%= ENV['DATABASE_NAME'] %>
+  database: "<%= ENV['DATABASE_NAME'] %>"
   adapter: postgresql
-  host: <%= ENV['DATABASE_HOST'] %>
-  username: <%= ENV['DATABASE_USERNAME'] %>
-  password: <%= ENV['DATABASE_PASSWORD'] %>
+  host: "<%= ENV['DATABASE_HOST'] %>"
+  username: "<%= ENV['DATABASE_USERNAME'] %>"
+  password: "<%= ENV['DATABASE_PASSWORD'] %>"