Document 8.4-bullseye image

Author: andrewnicols

README.md

@@ -11,6 +11,7 @@ A Moodle PHP environment configured for Moodle development based on [Official PH
 | PHP 8.3      | Bookworm | 8.3, 8.3-bookworm| [![Test and publish 8.3](https://github.com/moodlehq/moodle-php-apache/actions/workflows/test_buildx_and_publish.yml/badge.svg?branch=8.3-bookworm)](https://github.com/moodlehq/moodle-php-apache/actions/workflows/test_buildx_and_publish.yml)|
 | PHP 8.2      | Bookworm | 8.2, 8.2-bookworm| [![Test and publish 8.2](https://github.com/moodlehq/moodle-php-apache/actions/workflows/test_buildx_and_publish.yml/badge.svg?branch=8.2-bookworm)](https://github.com/moodlehq/moodle-php-apache/actions/workflows/test_buildx_and_publish.yml)|
 | PHP 8.1      | Bookworm | 8.1, 8.1-bookworm | [![Test and publish 8.1](https://github.com/moodlehq/moodle-php-apache/actions/workflows/test_buildx_and_publish.yml/badge.svg?branch=8.1-bookworm)](https://github.com/moodlehq/moodle-php-apache/actions/workflows/test_buildx_and_publish.yml)|
+| PHP 8.4      | Bullseye| 8.4-bullseye| [![Test and publish 8.4](https://github.com/moodlehq/moodle-php-apache/actions/workflows/test_buildx_and_publish.yml/badge.svg?branch=8.4-bullseye)](https://github.com/moodlehq/moodle-php-apache/actions/workflows/test_buildx_and_publish.yml)|
 | PHP 8.3      | Bullseye| 8.3-bullseye| [![Test and publish 8.3](https://github.com/moodlehq/moodle-php-apache/actions/workflows/test_buildx_and_publish.yml/badge.svg?branch=8.3-bullseye)](https://github.com/moodlehq/moodle-php-apache/actions/workflows/test_buildx_and_publish.yml)|
 | PHP 8.2      | Bullseye| 8.2-bullseye| [![Test and publish 8.2](https://github.com/moodlehq/moodle-php-apache/actions/workflows/test_buildx_and_publish.yml/badge.svg?branch=8.2-bullseye)](https://github.com/moodlehq/moodle-php-apache/actions/workflows/test_buildx_and_publish.yml)|
 | PHP 8.1      | Bullseye| 8.1-bullseye| [![Test and publish 8.1](https://github.com/moodlehq/moodle-php-apache/actions/workflows/test_buildx_and_publish.yml/badge.svg?branch=8.1-bullseye)](https://github.com/moodlehq/moodle-php-apache/actions/workflows/test_buildx_and_publish.yml)|