Fix test

spec/workers/activitypub/fetch_instance_info_worker_spec.rb

@@ -2,7 +2,7 @@
 
 require 'rails_helper'
 
-describe ActivityPub::FetchInstanceInfoWorker do
+RSpec.describe ActivityPub::FetchInstanceInfoWorker do
   subject { described_class.new }
 
   let(:wellknown_nodeinfo) do

spec/workers/activitypub/fetch_remote_status_worker_spec.rb

@@ -2,7 +2,7 @@
 
 require 'rails_helper'
 
-describe ActivityPub::FetchRemoteStatusWorker do
+RSpec.describe ActivityPub::FetchRemoteStatusWorker do
   subject { described_class.new }
 
   let(:sender) { Fabricate(:account, domain: 'example.com', uri: 'https://example.com/actor') }

spec/workers/process_references_worker_spec.rb

@@ -2,7 +2,7 @@
 
 require 'rails_helper'
 
-describe ProcessReferencesWorker do
+RSpec.describe ProcessReferencesWorker do
   let(:worker) { described_class.new }
 
   describe 'perform' do