replace deprecated update_attributes with update

plugins/links/app/controllers/admin/links_controller.rb

@@ -25,7 +25,7 @@ class Admin::LinksController < Admin::BaseController
   def update
     @link = Link.find(params[:id])
 
-    if @link.update_attributes!(link_params)
+    if @link.update!(link_params)
       index
       render action: :update_links
     else

plugins/polls/app/controllers/polls_controller.rb

@@ -37,7 +37,7 @@ class PollsController < ApplicationController
 
     if user_has_no_right
       redirect_to polls_path, alert: t('.no_right')
-    elsif @poll.update_attributes(poll_params)
+    elsif @poll.update(poll_params)
       redirect_to @poll, notice: t('.notice')
     else
       render action: 'edit'

plugins/printer/app/models/printer_job.rb

@@ -26,6 +26,6 @@ class PrinterJob < ActiveRecord::Base
   def finish!(user = nil)
     return unless finished_at.nil?
 
-    update_attributes finished_at: Time.now, finished_by: user
+    update(finished_at: Time.now, finished_by: user)
   end
 end