able to switch between bulk upload parsers

- depending on what year we are processing

app/services/bulk_upload/lettings/log_creator.rb

@@ -26,7 +26,14 @@ class BulkUpload::Lettings::LogCreator
 private
 
   def csv_parser
-    @csv_parser ||= BulkUpload::Lettings::CsvParser.new(path:)
+    @csv_parser ||= case bulk_upload.year
+                    when 2022
+                      BulkUpload::Lettings::Year2022::CsvParser.new(path:)
+                    when 2023
+                      BulkUpload::Lettings::Year2023::CsvParser.new(path:)
+                    else
+                      raise "csv parser not found"
+                    end
   end
 
   def row_offset

app/services/bulk_upload/lettings/validator.rb

@@ -73,7 +73,14 @@ private
   end
 
   def csv_parser
-    @csv_parser ||= BulkUpload::Lettings::CsvParser.new(path:)
+    @csv_parser ||= case bulk_upload.year
+                    when 2022
+                      BulkUpload::Lettings::Year2022::CsvParser.new(path:)
+                    when 2023
+                      BulkUpload::Lettings::Year2023::CsvParser.new(path:)
+                    else
+                      raise "csv parser not found"
+                    end
   end
 
   def row_offset

app/services/bulk_upload/lettings/year2022/csv_parser.rb

@@ -1,6 +1,6 @@
 require "csv"
 
-class BulkUpload::Lettings::CsvParser
+class BulkUpload::Lettings::Year2022::CsvParser
   attr_reader :path
 
   def initialize(path:)

spec/services/bulk_upload/lettings/year2022/csv_parser_spec.rb

@@ -1,6 +1,6 @@
 require "rails_helper"
 
-RSpec.describe BulkUpload::Lettings::CsvParser do
+RSpec.describe BulkUpload::Lettings::Year2022::CsvParser do
   subject(:service) { described_class.new(path:) }
 
   let(:path) { file_fixture("2022_23_lettings_bulk_upload.csv") }