Add PHP version 8.5 to workflow

Signed-off-by: Cody Finegan <44886+codyfinegan@users.noreply.github.com>

Author: codyfinegan

.github/workflows/tests.yml

@@ -20,6 +20,7 @@ jobs:
           - '8.2'
           - '8.3'
           - '8.4'
+          - '8.5'
 
     steps:
       - name: Checkout code