Merge tag 'v4.2.6' into tedomum

CHANGELOG.md

Gemfile.lock

app/controllers/auth/omniauth_callbacks_controller.rb

app/lib/application_extension.rb

app/models/concerns/omniauthable.rb

app/models/identity.rb

app/models/user.rb

config/initializers/doorkeeper.rb

config/routes.rb

docker-compose.yml

lib/mastodon/version.rb

lib/tasks/sidekiq_unique_jobs.rake

spec/models/identity_spec.rb

spec/models/user_spec.rb

spec/requests/disabled_oauth_endpoints_spec.rb

spec/requests/omniauth_callbacks_spec.rb