feat: stub os api in sales row parser

spec/services/bulk_upload/sales/year2024/row_parser_spec.rb

@@ -242,6 +242,9 @@ RSpec.describe BulkUpload::Sales::Year2024::RowParser do
       stub_request(:get, /api\.postcodes\.io/)
       .to_return(status: 200, body: "{\"status\":200,\"result\":{\"admin_district\":\"Manchester\", \"codes\":{\"admin_district\": \"E08000003\"}}}", headers: {})
 
+      stub_request(:get, "https://api.os.uk/search/places/v1/find?key=OS_DATA_KEY&maxresults=10&minmatch=0.4&query=some%20street,%20some%20town,%20,%20,%20EC1N%202TD")
+        .to_return(status: 200, body: { results: [{ DPA: { postcode: "12345" } }] }.to_json, headers: {})
+
       parser.valid?
     end