hentai foundry: replace HTTParty with Danbooru::Http.

app/logical/sources/strategies/hentai_foundry.rb

@@ -64,11 +64,10 @@ module Sources
       def page
         return nil if page_url.blank?
 
-        doc = Cache.get("hentai-foundry:#{page_url}", 1.minute) do
+        response = Danbooru::Http.new.cache(1.minute).get("#{page_url}?enterAgree=1")
-          HTTParty.get("#{page_url}?enterAgree=1").body
+        return nil unless response.status == 200
-        end
 
-        Nokogiri::HTML(doc)
+        response.parse
       end
 
       def tags