additional error handling in tests

app/models/artist.rb

@@ -484,7 +484,7 @@ class Artist < ApplicationRecord
       else
         nil
       end
-    rescue Net::OpenTimeout
+    rescue Net::OpenTimeout, PixivApiClient::Error
       raise if Rails.env.test?
       nil
     rescue Exception

app/models/artist_url.rb

@@ -21,7 +21,7 @@ class ArtistUrl < ApplicationRecord
 
       begin
         url = Sources::Site.new(url).normalize_for_artist_finder!
-      rescue PixivApiClient::Error
+      rescue Net::OpenTimeout, PixivApiClient::Error
         raise if Rails.env.test?
       rescue Sources::Site::NoStrategyError
       end