Update PHP binaries to preinstall version 8.4 in Dockerfile

Author: mrrobot47

Dockerfile

@@ -6,7 +6,7 @@ LABEL "com.github.actions.description"="Run automated code review using PHPCS on
 LABEL "org.opencontainers.image.source"="https://github.com/rtCamp/action-phpcs-code-review"
 
 ARG DEFAULT_PHP_VERSION=8.3
-ARG PHP_BINARIES_TO_PREINSTALL='7.4 8.0 8.1 8.2 8.3'
+ARG PHP_BINARIES_TO_PREINSTALL='7.4 8.0 8.1 8.2 8.3 8.4'
 
 ENV DOCKER_USER=rtbot
 ENV ACTION_WORKDIR=/home/$DOCKER_USER