fix: PHP보안패치 관련 버전 업그레이드 적용

docker/php/Dockerfile

@@ -1,4 +1,4 @@
-FROM php:8.1-apache
+FROM php:8.5.12-apache
 
 RUN apt-get update \
     && apt-get install -y --no-install-recommends \
@@ -20,4 +20,4 @@ RUN apt-get update \
 COPY docker/apache/vhost.conf /etc/apache2/sites-available/000-default.conf
 COPY docker/php/local.ini /usr/local/etc/php/conf.d/local.ini
 
-WORKDIR /var/www/html
+WORKDIR /var/www/html