Update rails-html-sanitizer to version 1.4.4

Gemfile

@@ -61,4 +61,5 @@ end
 
 group :production do
   gem "puma"
+  gem "rails_12factor"
 end

Gemfile.lock

@@ -196,7 +196,7 @@ GEM
     parallel (1.20.1)
     parser (3.0.2.0)
       ast (~> 2.4.1)
-    pg (1.4.5)
+    pg (1.2.3)
     poltergeist (1.18.1)
       capybara (>= 2.1, < 4)
       cliver (~> 0.3.1)
@@ -235,6 +235,11 @@ GEM
       nokogiri (>= 1.6)
     rails-html-sanitizer (1.4.4)
       loofah (~> 2.19, >= 2.19.1)
+    rails_12factor (0.0.3)
+      rails_serve_static_assets
+      rails_stdout_logging
+    rails_serve_static_assets (0.0.5)
+    rails_stdout_logging (0.0.5)
     railties (5.2.6)
       actionpack (= 5.2.6)
       activesupport (= 5.2.6)
@@ -379,6 +384,7 @@ DEPENDENCIES
   puma
   rails (~> 5.1)
   rails-controller-testing
+  rails_12factor
   rspec-rails
   rubocop
   ruby_parser

config/environments/production.rb

@@ -71,7 +71,7 @@ DanBarberPhoto::Application.configure do
     authentication: :plain,
     user_name: ENV["SENDGRID_USERNAME"],
     password: ENV["SENDGRID_PASSWORD"],
-    domain: "heroku.com"
+    domain: "heroku.com",
   }
   ActionMailer::Base.delivery_method = :smtp