Add PHP 8.5 to static analysis workflow (#54)

Author: rossaddison

.github/workflows/static.yml

@@ -29,4 +29,4 @@ jobs:
       os: >-
         ['ubuntu-latest']
       php: >-
-        ['8.1', '8.2', '8.3', '8.4']
+        ['8.1', '8.2', '8.3', '8.4', '8.5']