Update symfony template to use php 8.4

Author: turegjorup

templates/symfony-6/docker-compose.server.yml

@@ -8,7 +8,7 @@ networks:
 
 services:
   phpfpm:
-    image: itkdev/php8.3-fpm:alpine
+    image: itkdev/php8.4-fpm:alpine
     restart: unless-stopped
     networks:
       - app

templates/symfony-6/docker-compose.yml

@@ -27,7 +27,7 @@ services:
       #- ENCRYPT=1 # Uncomment to enable database encryption.
 
   phpfpm:
-    image: itkdev/php8.3-fpm:latest
+    image: itkdev/php8.4-fpm:latest
     user: ${COMPOSE_USER:-deploy}
     networks:
       - app