Gravity Forms 2.8.7.1

- Added new environment variables to control the update message and the unregistered license message.
- Fixed an issue that causes hidden inputs to render in the autocomplete Ui of the form editor.
- Fixed an issue where exporting entries including multiple Multi-Column List fields would not create separate columns for each List field row. Credit: ForGravity.
- API: Added the [gform_uninstalling](https://docs.gravityforms.com/gform_uninstalling/) action hook.
- API: Added the [gform_form_pre_process_async_task](https://docs.gravityforms.com/gform_form_pre_process_async_task/) filter.
- API: Updated GFAPI::send_notifications() to support async (background) processing of notifications. Disabled by default. Enable using the [gform_is_asynchronous_notifications_enabled](https://docs.gravityforms.com/gform_is_asynchronous_notifications_enabled/) filter.

- Updated the minimum WordPress version on the System Status page to 6.0.
- Fixed issue which causes Products to display images as HTML in email notifications.
- Fixed an issue where some legacy admin notifications have a corrupt routing property resulting in the "Cannot send email because the TO address is invalid" error.
- Added a new environment variable to hide the background updates setting.
- Fixed an issue that causes the "Enable Other Choice" setting for option based fields (Radio, Checkbox etc) to not display in the Flyout when the Quiz add-on is enabled.

- Fixed an issue where the gform_require_login filter isn't called in all contexts the form requireLogin property is checked.