Add paranoia dependency explicitly

Paranoia is being removed from Solidus core in favor of discard.
This adds paranoia dependency explicitly until we'll refactor the User
model here to use discard.

Author: cedum

solidus_auth_devise.gemspec

@@ -40,6 +40,7 @@ Gem::Specification.new do |s|
   s.add_dependency "deface", "~> 1.0"
   s.add_dependency "devise", '~> 4.1'
   s.add_dependency "devise-encryptable", "0.2.0"
+  s.add_dependency "paranoia", "~> 2.4"
   s.add_dependency "solidus_core", solidus_version
   s.add_dependency "solidus_support", ">= 0.1.3"