iThemes Security Pro 8.5.3

Important: iThemes Security requires WordPress 5.4 or later.
New Feature: Manage bans from the Security Dashboard with the new Banned Users card.
Enhancement: Support writing a note describing why a ban was added.
Enhancement: Store the time a ban was added, and the lockout module responsible for the ban.
Enhancement: Add a WP CLI command for managing bans, wp itsec ban.
Enhancement: Add a setting for configuring the number of bans added to the server config files (.htaccess/nginx.conf).
Bug Fix: PHP warnings when invalid entries are stored in the WordPress Cron storage.
Bug Fix: Update the list of tables added to wpdb.
Bug Fix: Remove default value for text columns. This caused an issue on MySQL 8 and is unnecessary.
Bug Fix: Missing borders in the sidebar widgets on WordPress 5.5.
Bug Fix: Notice actions didn't trigger when "Hide Admin Bar" is enabled.

Bug Fix: On WordPress 5.5, use the new auto-update notification instead of the debug email.
Bug Fix: Updated lib/updater to 1.6.4 Added support for the auto-update feature introduced in WordPress 5.5.

Bug Fix: Update lib/updater to the latest version. Fixed fatal error that can happen when upgrading to the 1.6.1 version of this code: Ithemes_Updater_Settings::get_licensed_site_url() in server.php:199".