ci: add testing on php 8.5

Author: inhere

.github/workflows/php.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: [ 8.1, 8.2, 8.3, 8.4] # 7.1, 7.2,
+        php: [ 8.1, 8.2, 8.3, 8.4, 8.5] # 7.1, 7.2,
 
     steps:
       - name: Checkout