Add PHP 8.5-rc dev env

Author: cedric-anne

.github/workflows/glpi-development-env.yml

@@ -29,6 +29,7 @@ jobs:
           - {base-image: "php:8.2-apache-trixie", php-version: "8.2", latest: "false"}
           - {base-image: "php:8.3-apache-trixie", php-version: "8.3", latest: "false"}
           - {base-image: "php:8.4-apache-trixie", php-version: "8.4", latest: "true"}
+          - {base-image: "php:8.5-rc-apache-trixie", php-version: "8.5", latest: "false"}
     steps:
       - name: "Set variables"
         run: |