Fix MIME Rule

Author: ahoshaiyan

lib/mini_defender/rules/mime_types.rb

@@ -26,7 +26,7 @@ def self.make(args)
 
   def passes?(attribute, value, validator)
     @file = value.is_a?(ActionDispatch::Http::UploadedFile)
-    @file && @types.include?(@file.content_type)
+    @file && @types.include?(value.content_type)
   end
 
   def message(attribute, value, validator)

lib/mini_defender/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module MiniDefender
-  VERSION = "0.6.4"
+  VERSION = "0.6.5"
 end