ci: add PHP 8.5 to test matrix

Author: boutetnico

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-version: ["8.2", "8.3", "8.4"]
+        php-version: ["8.2", "8.3", "8.4", "8.5"]
 
     steps:
       - uses: actions/checkout@v6