Update default PHP version to 8.5 in GitHub Actions configuration

Author: jrughani9

.github/actions/setup-php/action.yml

@@ -7,7 +7,7 @@ inputs:
     required: false
     type: string
     description: the php version to use, defaults to 8.4
-    default: '8.4'
+    default: '8.5'
 
 runs:
   using: composite