Drupal Core Auto Update?
If you like you can use the CMS Updater module to enable automatic Drupal core updates. Find the module on drupal.org here: https://www.drupal.org/project/cms_updater

If you need more information about the service behind, lokk here: https://cms-updater.com

Excerpt from project page:


  CMS Updater module helps you to keep your Drupal site secure at all times.
  Right after a new Drupal core release is published, this is recognised by the CMS Updater Service, which in turn will update your Drupal system.
  
  There is no need for intervention on your part – just check your mailbox from time to time, read your PDF update, and see if the automated updates have been successfully completed (or not).
  
  The use of this module requires the purchase of a CMS Updater licence key for € 29.99 incl. VAT. This fee covers one year of updates - your subscription will not be automatically extended, although you will be reminded when your subscription is close to expiring. You can buy the licence key directly in your Drupal admin area under /admin/config/system/cms-updater. If you need a hand or more information, visit https://cms-updater.com.


Emphasis on price added for purpose of this answer.