WordPress 5.5 now supports auto-updates for plugins and themes

Aug 2020 NOTE: If you use the DIVI theme, WooCommerce, or Instagram plugins, WP5.5 may break your site due to these plugins/themes not being ready for 5.5 just yet. If you are experiencing problems, install this free plugin to patch that problematic gap:

Learn how to update your WordPress version to 5.5 and how to enable auto-updates for your individual plugins and themes. By enabling those auto-updates, you improve your site's security.

How to back up your site:

Official announcement for WordPress 5.5