Replace owner with first_owner in specs

spec/controllers/autocomplete_controller_spec.rb

spec/controllers/projects/artifacts_controller_spec.rb

spec/controllers/projects/avatars_controller_spec.rb

spec/controllers/projects/hooks_controller_spec.rb

...lers/projects/merge_requests/conflicts_controller_spec.rb

...lers/projects/merge_requests/creations_controller_spec.rb

...rollers/projects/merge_requests/drafts_controller_spec.rb

spec/controllers/projects/merge_requests_controller_spec.rb

spec/controllers/projects/mirrors_controller_spec.rb

spec/controllers/projects/pipelines_controller_spec.rb

spec/controllers/projects/service_ping_controller_spec.rb

spec/controllers/repositories/git_http_controller_spec.rb

spec/graphql/features/authorization_spec.rb

...hql/mutations/alert_management/alerts/todo/create_spec.rb

spec/graphql/mutations/issues/create_spec.rb

spec/graphql/resolvers/package_details_resolver_spec.rb

spec/graphql/resolvers/package_pipelines_resolver_spec.rb

spec/graphql/types/global_id_type_spec.rb