fix(Dossier.processed_in_month): ensure proper usage via method sig instead of defensive programming style

Gemfile

@@ -120,13 +120,13 @@ group :development do
 end
 
 group :development, :test do
-  gem 'sorbet'
-  gem 'sorbet-runtime'
   gem 'graphql-schema_comparator'
   gem 'mina', require: false # Deploy
   gem 'pry-byebug' # Call 'byebug' anywhere in the code to stop execution and get a debugger console
   gem 'rspec-rails'
   gem 'simple_xlsx_reader'
+  gem 'sorbet'
+  gem 'sorbet-runtime'
   gem 'spring' # Spring speeds up development by keeping your application running in the background
   gem 'spring-commands-rspec'
 end

app/services/procedure_archive_service.rb

@@ -22,7 +22,7 @@ class ProcedureArchiveService
     dossiers = if archive.time_span_type == 'everything'
       dossiers.state_termine
     else
-      dossiers.processed_in_month(archive.month)
+      dossiers.processed_in_month(archive.month.to_datetime)
     end
 
     attachments = ActiveStorage::DownloadableFile.create_list_from_dossiers(dossiers)

spec/models/dossier_spec.rb

@@ -1731,13 +1731,6 @@ describe Dossier do
       end
     end
 
-    context 'given a date' do
-      let(:archive_date) { Date.new(2022, 3, 1) }
-      it 'includes a dossier processed_at at last day of month' do
-        expect(Dossier.processed_in_month(archive_date).count).to eq(1)
-      end
-    end
-
     context 'given a datetime' do
       let(:archive_date) { DateTime.new(2022, 3, 1, 12, 0) }
       it 'includes a dossier processed_at at last day of month' do