Bump php from 8.3-fpm to 8.4-fpm

Bumps php from 8.3-fpm to 8.4-fpm.

---
updated-dependencies:
- dependency-name: php
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Dockerfile

@@ -1,4 +1,4 @@
-FROM php:8.3-fpm
+FROM php:8.4-fpm
 
 # Copy composer.lock and composer.json
 COPY composer.lock composer.json /var/www/