Make sure we pass an integer to export_xml_lettings_logs (#1880)

lib/tasks/data_export.rake

@@ -13,7 +13,7 @@ namespace :core do
 
   desc "Export all data XMLs for import into Central Data System (CDS)"
   task :full_data_export_xml, %i[year] => :environment do |_task, args|
-    collection_year = args[:year].presence
+    collection_year = args[:year].present? ? args[:year].to_i : nil
     storage_service = Storage::S3Service.new(PlatformHelper.is_paas? ? Configuration::PaasConfigurationService.new : Configuration::EnvConfigurationService.new, ENV["EXPORT_PAAS_INSTANCE"])
     export_service = Exports::LettingsLogExportService.new(storage_service)
 

spec/lib/tasks/data_export_spec.rb

@@ -42,7 +42,7 @@ describe "rake core:data_export", type: task do
       it "calls the export service" do
         expect(export_service).to receive(:export_xml_lettings_logs).with(full_update: true, collection_year: 2022)
 
-        task.invoke(2022)
+        task.invoke("2022")
       end
     end
   end