Issues with PHP 8.2

According to https://www.php.net/supported-versions.php, the latest supported version is PHP 8.2 (soon, even 8.1 will have only security updates).

I tried updating my site to 8.2 and I receive the following issues:

[08-Nov-2023 08:31:09 UTC] PHP Deprecated:  Creation of dynamic property Flexible_Checkout_Fields_Plugin::$template_path is deprecated in wp-content/plugins/flexible-checkout-fields/classes/plugin.php on line 84
[08-Nov-2023 08:31:09 UTC] PHP Deprecated:  Creation of dynamic property Flexible_Checkout_Fields_Plugin::$default_view_args is deprecated in wp-content/plugins/flexible-checkout-fields/classes/plugin.php on line 86
[08-Nov-2023 08:31:09 UTC] PHP Deprecated:  Creation of dynamic property Flexible_Checkout_Fields_Plugin::$plugin_has_settings is deprecated in wp-content/plugins/flexible-checkout-fields/classes/plugin.php on line 87
[08-Nov-2023 08:31:09 UTC] PHP Deprecated:  Creation of dynamic property Flexible_Checkout_Fields_Settings::$plugin is deprecated in wp-content/plugins/flexible-checkout-fields/classes/settings.php on line 13
[08-Nov-2023 08:31:09 UTC] PHP Deprecated:  Creation of dynamic property Flexible_Checkout_Fields_Plugin::$settings is deprecated in wp-content/plugins/flexible-checkout-fields/classes/plugin.php on line 116