[fix #4361] Update user table sign_in

lib/tasks/deployment/20191007124230_update_admin_last_sign_in_at.rake

@@ -0,0 +1,17 @@
+namespace :after_party do
+  desc 'Deployment task: update_admin_last_sign_in_at'
+  task update_admin_last_sign_in_at: :environment do
+    sql = <<-SQL
+      UPDATE users
+      SET last_sign_in_at = administrateurs.updated_at
+      FROM administrateurs
+      WHERE administrateur_id = administrateurs.id
+        AND users.last_sign_in_at IS NULL
+        AND administrateurs.active = true
+    SQL
+
+    ActiveRecord::Base.connection.execute(sql)
+
+    AfterParty::TaskRecord.create version: '20191007124230'
+  end
+end