Merge pull request #20 from lsst-epo/18-update-php-to-version-8-3

Changed PHP version to `v8.2` for Imagick support

Dockerfile

@@ -1,6 +1,6 @@
 # Use the official PHP image.
 # https://hub.docker.com/_/php
-FROM php:8.3-apache
+FROM php:8.2-apache
 
 # Configure PHP for Cloud Run.
 # Precompile PHP code with opcache.