Add a CI job running on PHP 8.5

Author: stof

.github/workflows/tests.yml

@@ -39,7 +39,7 @@ jobs:
 
     strategy:
       matrix:
-        php: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
+        php: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4', '8.5']
         composer_flags: [ '' ]
         minimum_stability: [ '' ]
         symfony_deprecations_helper: [ '' ]