Upgrade paranoia to version 2.4.0

Gemfile

@@ -34,7 +34,7 @@ gem 'omniauth-facebook', '~> 4.0.0'
 gem 'omniauth-google-oauth2', '~> 0.4.0'
 gem 'omniauth-twitter', '~> 1.4.0'
 gem 'paperclip', '~> 5.1.0'
-gem 'paranoia', '~> 2.3.1'
+gem 'paranoia', '~> 2.4.0'
 gem 'pg', '~> 0.21.0'
 gem 'pg_search', '~> 2.0.1'
 gem 'redcarpet', '~> 3.4.0'

Gemfile.lock

@@ -302,7 +302,7 @@ GEM
       mime-types
       mimemagic (~> 0.3.0)
     parallel (1.11.2)
-    paranoia (2.3.1)
+    paranoia (2.4.0)
       activerecord (>= 4.0, < 5.2)
     parser (2.4.0.2)
       ast (~> 2.3)
@@ -539,7 +539,7 @@ DEPENDENCIES
   omniauth-google-oauth2 (~> 0.4.0)
   omniauth-twitter (~> 1.4.0)
   paperclip (~> 5.1.0)
-  paranoia (~> 2.3.1)
+  paranoia (~> 2.4.0)
   pg (~> 0.21.0)
   pg_search (~> 2.0.1)
   poltergeist (~> 1.17.0)