Yasumasa Ashida

This patch add support for Google One Tap sign-in. Display Google One Tap https://developers.google.com/identity/gsi/web/guides/display-google-one-tap?hl=en Example: https://github.com/asip/easel-back/blob/3d0ff7698b81b49ad041872fd0cb614bf2533d35/app/controllers/api/v1/oauth/sessions_controller.rb https://github.com/asip/easel-back/blob/3d0ff7698b81b49ad041872fd0cb614bf2533d35/app/lib/sorcery/controller/submodules/external.rb https://github.com/asip/easel-legacy/blob/ecbd5a97c2bac08dfecda24e0c536e5de4609aba/app/controllers/oauth/sessions_controller.rb https://github.com/asip/easel-legacy/blob/ecbd5a97c2bac08dfecda24e0c536e5de4609aba/app/lib/sorcery/controller/submodules/external.rb - [x] Description of changes - [x] Update to CHANGELOG.md with...

This pull request updates rails to 5.2.8.1.

There was a leakage in the fix in #5, so it has been fixed.