Add PHP 8.5 to the CI matrix

Author: akrabat

.github/workflows/tests.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: [8.0, 8.1, 8.2, 8.3, 8.4]
+        php: [8.0, 8.1, 8.2, 8.3, 8.4, 8.5]
         experimental: [false]
         composer-options: ['']
         include: