Log Message:
www/ruby-ethon: update to 0.15.0

0.15.0 (2021-10-12)

* Revert "Easy::Operations#handle: Thread-safe cleanup (#136)"
* Add optional socket_action mode to Ethon::Multi
* Fix tests to clean up correctly, rely on ongoing? and not socket count.
* Fix tests from multi_socket_action addition.
* HTTPS proxies - support for own SSL/TLS session
* Added size_upload, size_download, speed_upload, speed_download to
  available informations