fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DEBIAN11-LIBXML2-9673942
- https://snyk.io/vuln/SNYK-DEBIAN11-LIBXML2-9747194
- https://snyk.io/vuln/SNYK-DEBIAN11-CURL-3320493
- https://snyk.io/vuln/SNYK-DEBIAN11-CURL-3320493
- https://snyk.io/vuln/SNYK-DEBIAN11-DB53-2825168

Author: snyk-bot

Dockerfile

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1.7-labs
-FROM php:8.4.6-fpm-bullseye
+FROM php:8.4.8RC1-fpm-bullseye
 
 ENV APP_ENV prod
 ENV APP_DEBUG 0