Add PHP 8.5-rc dev env

Author: cedric-anne

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

@@ -22,7 +22,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-version: ["7.4", "8.0", "8.1", "8.2", "8.3"]
+        php-version: ["7.4", "8.0", "8.1", "8.2", "8.3", "8.5-rc"]
         latest: ["false"]
         include:
           - {php-version: "8.4", latest: "true"}