This security and maintenance release features 2 bug fixes in addition to 1 security fix. Because this is a security release, it is recommended that you update your sites immediately. All versions since WordPress 5.2 have also been updated.
WordPress 5.8.2 is a small focus security and maintenance release. The next major release will be version 5.9.
WordPress.org already started automatic background updates that do not require you to do anything, but it may take some time for them to get to your website. If it does not update automatically, either do it yourself (and don’t forget to make a full backup first!) or contact Dusk Owl for help.