Set 2024 date in form_handler_spec to be during crossover period as needed

spec/models/form_handler_spec.rb

@@ -246,8 +246,8 @@ RSpec.describe FormHandler do
       end
     end
 
-    context "when only archived form form is defined in JSON (current collection start year 2024 onwards)" do # TODO: CLDC-3505 remove this test on year hard end
+    context "when only archived form is defined in JSON (current collection start year 2024 onwards)" do
-      let(:now) { Time.utc(2024, 9, 20) }
+      let(:now) { Time.utc(2024, 5, 20) }
 
       it "creates previous_lettings, current_lettings and next_lettings forms from ruby form objects and archived form from json" do
         expect(form_handler.lettings_forms["archived_lettings"]).to be_present