sources: don't escape Unicode characters in tag search URLs.

Fix it so that Unicode characters aren't unnecessarily percent-encoded when generating tag search
URLs. For example, generate URLs like this:

* https://www.pixiv.net/tags/オリジナル/artworks

Not like this:

* https://www.pixiv.net/tags/%E3%82%AA%E3%83%AA%E3%82%B8%E3%83%8A%E3%83%AB/artworks

app/logical/source/extractor/tinami.rb

@@ -47,7 +47,7 @@ module Source
 
       def tags
         page&.css("#view .tag a[href^='/search/list']").to_a.map do |tag|
-          [tag.text, "https://www.tinami.com/search/list?keyword=#{CGI.escape(tag.text)}"]
+          [tag.text, "https://www.tinami.com/search/list?keyword=#{Danbooru::URL.escape(tag.text)}"]
         end
       end