CLDC-1428 Change usage of Timecop to match other tests

spec/requests/lettings_logs_controller_spec.rb

@@ -1,7 +1,6 @@
 require "rails_helper"
 
 RSpec.describe LettingsLogsController, type: :request do
-  include ActiveSupport::Testing::TimeHelpers
 
   let(:user) { FactoryBot.create(:user) }
   let(:owning_organisation) { user.organisation }
@@ -51,10 +50,14 @@ RSpec.describe LettingsLogsController, type: :request do
       end
 
       before do
-        travel_to Time.utc(2022, 2, 8, 16, 52, 15)
+        Timecop.freeze(Time.utc(2022, 2, 8,))
         post "/logs", headers:, params: params.to_json
       end
 
+      after do
+        Timecop.unfreeze
+      end
+
       it "returns http success" do
         expect(response).to have_http_status(:success)
       end