Upgrade to PHP v8.3 following upstream

Author: PhrozenByte

container.env

@@ -7,6 +7,6 @@ VERSION_PATTERN="5.2.*"
 
 MERGE_IMAGE_GIT_REPO="https://github.com/phpmyadmin/docker.git"
 MERGE_IMAGE_BUD_CONTEXT="fpm-alpine"
-MERGE_IMAGE_BASE_IMAGE_PATTERN="php:8.2-fpm-alpine"
+MERGE_IMAGE_BASE_IMAGE_PATTERN="php:8.3-fpm-alpine"
 
-BASE_IMAGE="ghcr.io/sgsgermany/php-fpm:v8.2"
+BASE_IMAGE="ghcr.io/sgsgermany/php-fpm:v8.3"